{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47078", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-29T22:33:44.297Z", "datePublished": "2024-03-01T21:15:14.679Z", "dateUpdated": "2026-08-04T08:58:36.203Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-04T08:58:36.203Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Clear all QP fields if creation failed\n\nrxe_qp_do_cleanup() relies on valid pointer values in QP for the properly\ncreated ones, but in case rxe_qp_from_init() failed it was filled with\ngarbage and caused tot the following error.\n\n refcount_t: underflow; use-after-free.\n WARNING: CPU: 1 PID: 12560 at lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Modules linked in:\n CPU: 1 PID: 12560 Comm: syz-executor.4 Not tainted 5.12.0-syzkaller #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n RIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Code: e9 db fe ff ff 48 89 df e8 2c c2 ea fd e9 8a fe ff ff e8 72 6a a7 fd 48 c7 c7 e0 b2 c1 89 c6 05 dc 3a e6 09 01 e8 ee 74 fb 04 <0f> 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55\n RSP: 0018:ffffc900097ceba8 EFLAGS: 00010286\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000040000 RSI: ffffffff815bb075 RDI: fffff520012f9d67\n RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\n R10: ffffffff815b4eae R11: 0000000000000000 R12: ffff8880322a4800\n R13: ffff8880322a4940 R14: ffff888033044e00 R15: 0000000000000000\n FS: 00007f6eb2be3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fdbe5d41000 CR3: 000000001d181000 CR4: 00000000001506e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n __refcount_sub_and_test include/linux/refcount.h:283 [inline]\n __refcount_dec_and_test include/linux/refcount.h:315 [inline]\n refcount_dec_and_test include/linux/refcount.h:333 [inline]\n kref_put include/linux/kref.h:64 [inline]\n rxe_qp_do_cleanup+0x96f/0xaf0 drivers/infiniband/sw/rxe/rxe_qp.c:805\n execute_in_process_context+0x37/0x150 kernel/workqueue.c:3327\n rxe_elem_release+0x9f/0x180 drivers/infiniband/sw/rxe/rxe_pool.c:391\n kref_put include/linux/kref.h:65 [inline]\n rxe_create_qp+0x2cd/0x310 drivers/infiniband/sw/rxe/rxe_verbs.c:425\n _ib_create_qp drivers/infiniband/core/core_priv.h:331 [inline]\n ib_create_named_qp+0x2ad/0x1370 drivers/infiniband/core/verbs.c:1231\n ib_create_qp include/rdma/ib_verbs.h:3644 [inline]\n create_mad_qp+0x177/0x2d0 drivers/infiniband/core/mad.c:2920\n ib_mad_port_open drivers/infiniband/core/mad.c:3001 [inline]\n ib_mad_init_device+0xd6f/0x1400 drivers/infiniband/core/mad.c:3092\n add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:717\n enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1331\n ib_register_device drivers/infiniband/core/device.c:1413 [inline]\n ib_register_device+0x7c7/0xa50 drivers/infiniband/core/device.c:1365\n rxe_register_device+0x3d5/0x4a0 drivers/infiniband/sw/rxe/rxe_verbs.c:1147\n rxe_add+0x12fe/0x16d0 drivers/infiniband/sw/rxe/rxe.c:247\n rxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:503\n rxe_newlink drivers/infiniband/sw/rxe/rxe.c:269 [inline]\n rxe_newlink+0xb7/0xe0 drivers/infiniband/sw/rxe/rxe.c:250\n nldev_newlink+0x30e/0x550 drivers/infiniband/core/nldev.c:1555\n rdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195\n rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\n rdma_nl_rcv+0x2ee/0x430 drivers/infiniband/core/netlink.c:259\n netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\n netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\n sock_sendmsg_nosec net/socket.c:654 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:674\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2404\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\n do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47\n entry_SYSCALL_64_after_hwframe+0\n---truncated---"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "versions": [{"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "c65391dd9f0a47617e96e38bd27e277cbe1c40b0", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "6a8086a42dfbf548a42bf2ae4faa291645c72c66", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "f3783c415bf6d2ead3d7aa2c38802bbe10723646", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "a62225d951d77eb20208fed8fc199e0c9b1df08b", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "2ee4d79c364914989c80de382c0b1a7259a7e4b3", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "03344e843ab6dd3b3f2cadfb65ed910590856c70", "status": "affected", "versionType": "git"}, {"version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "67f29896fdc83298eed5a6576ff8f9873f709228", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "versions": [{"version": "4.8", "status": "affected"}, {"version": "0", "lessThan": "4.8", "status": "unaffected", "versionType": "semver"}, {"version": "4.9.270", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.14.234", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.192", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.122", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.40", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.7", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.9.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.14.234"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "4.19.192"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.4.122"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.10.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.12.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8", "versionEndExcluding": "5.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0"}, {"url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66"}, {"url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646"}, {"url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b"}, {"url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3"}, {"url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70"}, {"url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228"}], "title": "RDMA/rxe: Clear all QP fields if creation failed", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": 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"shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.601Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.601Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2021-47078", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-06T15:32:35.393910Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-23T19:01:11.716Z"}}], "cna": {"title": "RDMA/rxe: Clear all QP fields if creation failed", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.8, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "c65391dd9f0a47617e96e38bd27e277cbe1c40b0", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "6a8086a42dfbf548a42bf2ae4faa291645c72c66", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "f3783c415bf6d2ead3d7aa2c38802bbe10723646", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "a62225d951d77eb20208fed8fc199e0c9b1df08b", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "2ee4d79c364914989c80de382c0b1a7259a7e4b3", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "03344e843ab6dd3b3f2cadfb65ed910590856c70", "versionType": "git"}, {"status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "lessThan": "67f29896fdc83298eed5a6576ff8f9873f709228", "versionType": "git"}], "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"status": "unaffected", "version": "0", "lessThan": "4.8", "versionType": "semver"}, {"status": "unaffected", "version": "4.9.270", "versionType": "semver", "lessThanOrEqual": "4.9.*"}, {"status": "unaffected", "version": "4.14.234", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.192", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.122", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.40", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.7", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0"}, {"url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66"}, {"url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646"}, {"url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b"}, {"url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3"}, {"url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70"}, {"url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Clear all QP fields if creation failed\n\nrxe_qp_do_cleanup() relies on valid pointer values in QP for the properly\ncreated ones, but in case rxe_qp_from_init() failed it was filled with\ngarbage and caused tot the following error.\n\n refcount_t: underflow; use-after-free.\n WARNING: CPU: 1 PID: 12560 at lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Modules linked in:\n CPU: 1 PID: 12560 Comm: syz-executor.4 Not tainted 5.12.0-syzkaller #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n RIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Code: e9 db fe ff ff 48 89 df e8 2c c2 ea fd e9 8a fe ff ff e8 72 6a a7 fd 48 c7 c7 e0 b2 c1 89 c6 05 dc 3a e6 09 01 e8 ee 74 fb 04 <0f> 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55\n RSP: 0018:ffffc900097ceba8 EFLAGS: 00010286\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000040000 RSI: ffffffff815bb075 RDI: fffff520012f9d67\n RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\n R10: ffffffff815b4eae R11: 0000000000000000 R12: ffff8880322a4800\n R13: ffff8880322a4940 R14: ffff888033044e00 R15: 0000000000000000\n FS: 00007f6eb2be3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fdbe5d41000 CR3: 000000001d181000 CR4: 00000000001506e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n __refcount_sub_and_test include/linux/refcount.h:283 [inline]\n __refcount_dec_and_test include/linux/refcount.h:315 [inline]\n refcount_dec_and_test include/linux/refcount.h:333 [inline]\n kref_put include/linux/kref.h:64 [inline]\n rxe_qp_do_cleanup+0x96f/0xaf0 drivers/infiniband/sw/rxe/rxe_qp.c:805\n execute_in_process_context+0x37/0x150 kernel/workqueue.c:3327\n rxe_elem_release+0x9f/0x180 drivers/infiniband/sw/rxe/rxe_pool.c:391\n kref_put include/linux/kref.h:65 [inline]\n rxe_create_qp+0x2cd/0x310 drivers/infiniband/sw/rxe/rxe_verbs.c:425\n _ib_create_qp drivers/infiniband/core/core_priv.h:331 [inline]\n ib_create_named_qp+0x2ad/0x1370 drivers/infiniband/core/verbs.c:1231\n ib_create_qp include/rdma/ib_verbs.h:3644 [inline]\n create_mad_qp+0x177/0x2d0 drivers/infiniband/core/mad.c:2920\n ib_mad_port_open drivers/infiniband/core/mad.c:3001 [inline]\n ib_mad_init_device+0xd6f/0x1400 drivers/infiniband/core/mad.c:3092\n add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:717\n enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1331\n ib_register_device drivers/infiniband/core/device.c:1413 [inline]\n ib_register_device+0x7c7/0xa50 drivers/infiniband/core/device.c:1365\n rxe_register_device+0x3d5/0x4a0 drivers/infiniband/sw/rxe/rxe_verbs.c:1147\n rxe_add+0x12fe/0x16d0 drivers/infiniband/sw/rxe/rxe.c:247\n rxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:503\n rxe_newlink drivers/infiniband/sw/rxe/rxe.c:269 [inline]\n rxe_newlink+0xb7/0xe0 drivers/infiniband/sw/rxe/rxe.c:250\n nldev_newlink+0x30e/0x550 drivers/infiniband/core/nldev.c:1555\n rdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195\n rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\n rdma_nl_rcv+0x2ee/0x430 drivers/infiniband/core/netlink.c:259\n netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\n netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\n sock_sendmsg_nosec net/socket.c:654 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:674\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2404\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\n do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47\n entry_SYSCALL_64_after_hwframe+0\n---truncated---"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.9.270", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.14.234", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.192", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.122", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.40", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.12.7", "versionStartIncluding": "4.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.13", "versionStartIncluding": "4.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-04T08:58:36.203Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47078", "state": "PUBLISHED", "dateUpdated": "2026-08-04T08:58:36.203Z", "dateReserved": "2024-02-29T22:33:44.297Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-01T21:15:14.679Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c65391dd9f0a47617e96e38bd27e277cbe1c40b0", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "6a8086a42dfbf548a42bf2ae4faa291645c72c66", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "f3783c415bf6d2ead3d7aa2c38802bbe10723646", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "a62225d951d77eb20208fed8fc199e0c9b1df08b", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "2ee4d79c364914989c80de382c0b1a7259a7e4b3", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "03344e843ab6dd3b3f2cadfb65ed910590856c70", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}, {"lessThan": "67f29896fdc83298eed5a6576ff8f9873f709228", "status": "affected", "version": "8700e3e7c4857d28ebaa824509934556da0b3e76", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/sw/rxe/rxe_qp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.8"}, {"lessThan": "4.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.270", "versionType": "semver"}, {"lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.234", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.192", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.122", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.40", "versionType": "semver"}, {"lessThanOrEqual": "5.12.*", "status": "unaffected", "version": "5.12.7", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8B5E8D33-2EE8-45AB-8A14-9E1CD10154C5", "versionEndExcluding": "4.9.270", "versionStartIncluding": "4.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "93343D37-7E5D-4B60-BB87-0C636D617135", "versionEndExcluding": "4.14.234", "versionStartIncluding": "4.10", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D16B80B0-1DAC-4C57-B665-6BE9E231EDDA", "versionEndExcluding": "4.19.192", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6530C9FA-EEF8-4821-9186-47F7A1FA3C1A", "versionEndExcluding": "5.4.122", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "69DD053C-277F-4A8C-9606-11A24F806D05", "versionEndExcluding": "5.10.40", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E8F2CE30-38B0-4716-B12B-A139B0F9C5C9", "versionEndExcluding": "5.12.7", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "0CBAD0FC-C281-4666-AB2F-F8E6E1165DF7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*", "matchCriteriaId": "96AC23B2-D46A-49D9-8203-8E1BEDCA8532", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Clear all QP fields if creation failed\n\nrxe_qp_do_cleanup() relies on valid pointer values in QP for the properly\ncreated ones, but in case rxe_qp_from_init() failed it was filled with\ngarbage and caused tot the following error.\n\n refcount_t: underflow; use-after-free.\n WARNING: CPU: 1 PID: 12560 at lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Modules linked in:\n CPU: 1 PID: 12560 Comm: syz-executor.4 Not tainted 5.12.0-syzkaller #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n RIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\n Code: e9 db fe ff ff 48 89 df e8 2c c2 ea fd e9 8a fe ff ff e8 72 6a a7 fd 48 c7 c7 e0 b2 c1 89 c6 05 dc 3a e6 09 01 e8 ee 74 fb 04 <0f> 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55\n RSP: 0018:ffffc900097ceba8 EFLAGS: 00010286\n RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\n RDX: 0000000000040000 RSI: ffffffff815bb075 RDI: fffff520012f9d67\n RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\n R10: ffffffff815b4eae R11: 0000000000000000 R12: ffff8880322a4800\n R13: ffff8880322a4940 R14: ffff888033044e00 R15: 0000000000000000\n FS: 00007f6eb2be3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007fdbe5d41000 CR3: 000000001d181000 CR4: 00000000001506e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n __refcount_sub_and_test include/linux/refcount.h:283 [inline]\n __refcount_dec_and_test include/linux/refcount.h:315 [inline]\n refcount_dec_and_test include/linux/refcount.h:333 [inline]\n kref_put include/linux/kref.h:64 [inline]\n rxe_qp_do_cleanup+0x96f/0xaf0 drivers/infiniband/sw/rxe/rxe_qp.c:805\n execute_in_process_context+0x37/0x150 kernel/workqueue.c:3327\n rxe_elem_release+0x9f/0x180 drivers/infiniband/sw/rxe/rxe_pool.c:391\n kref_put include/linux/kref.h:65 [inline]\n rxe_create_qp+0x2cd/0x310 drivers/infiniband/sw/rxe/rxe_verbs.c:425\n _ib_create_qp drivers/infiniband/core/core_priv.h:331 [inline]\n ib_create_named_qp+0x2ad/0x1370 drivers/infiniband/core/verbs.c:1231\n ib_create_qp include/rdma/ib_verbs.h:3644 [inline]\n create_mad_qp+0x177/0x2d0 drivers/infiniband/core/mad.c:2920\n ib_mad_port_open drivers/infiniband/core/mad.c:3001 [inline]\n ib_mad_init_device+0xd6f/0x1400 drivers/infiniband/core/mad.c:3092\n add_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:717\n enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1331\n ib_register_device drivers/infiniband/core/device.c:1413 [inline]\n ib_register_device+0x7c7/0xa50 drivers/infiniband/core/device.c:1365\n rxe_register_device+0x3d5/0x4a0 drivers/infiniband/sw/rxe/rxe_verbs.c:1147\n rxe_add+0x12fe/0x16d0 drivers/infiniband/sw/rxe/rxe.c:247\n rxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:503\n rxe_newlink drivers/infiniband/sw/rxe/rxe.c:269 [inline]\n rxe_newlink+0xb7/0xe0 drivers/infiniband/sw/rxe/rxe.c:250\n nldev_newlink+0x30e/0x550 drivers/infiniband/core/nldev.c:1555\n rdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195\n rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\n rdma_nl_rcv+0x2ee/0x430 drivers/infiniband/core/netlink.c:259\n netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\n netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\n sock_sendmsg_nosec net/socket.c:654 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:674\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2404\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\n do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47\n entry_SYSCALL_64_after_hwframe+0\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: RDMA/rxe: borra todos los campos QP si la creaci\u00f3n falla. rxe_qp_do_cleanup() se basa en valores de puntero v\u00e1lidos en QP para los creados correctamente, pero en caso de que rxe_qp_from_init() fallara, se llen\u00f3 con basura y provoc\u00f3 el siguiente error. refcount_t: desbordamiento insuficiente; Use After Free. ADVERTENCIA: CPU: 1 PID: 12560 en lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28 M\u00f3dulos vinculados en: CPU: 1 PID: 12560 Comm: syz-executor.4 No contaminado 5.12.0 -syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28 C\u00f3digo: e9 db fe ff ff 48 89 df e8 2c c2 ea fd e9 8a fe ff ff e8 72 6a a7 fd 48 c7 c7 e0 b2 c1 89 c6 05 dc 3a e6 09 01 e8 ee 74 fb 04 &lt;0f&gt; 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 RSP: 0018:ffffc900097ceba8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 00000000000000000 RCX: 0000000000000000 RDX: 00 00000000040000 RSI: ffffffff815bb075 RDI: fffff520012f9d67 RBP: 0000000000000003 R08: 00000000000000000 R09: 00000000000000000 R10: ffffffff815b4eae R 11: 0000000000000000 R12: ffff8880322a4800 R13: ffff8880322a4940 R14: ffff888033044e00 R15: 0000000000000000 FS: 00007f6eb2be3700(0000) GS:ffff8880b9d00000(0000) knlGS :0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdbe5d41000 CR3: 000000001d181000 CR4: 00000000001506e0 DR0: 0000 000000000000 DR1 : 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: __refcount_sub_and_test include/linux/refcount.h:283 [ en l\u00ednea] __refcount_dec_and_test include/linux/refcount.h:315 [en l\u00ednea] refcount_dec_and_test include/linux/refcount. h:333 [en l\u00ednea] kref_put include/linux/kref.h:64 [en l\u00ednea] rxe_qp_do_cleanup+0x96f/0xaf0 drivers/infiniband/sw/rxe/rxe_qp.c:805 ejecutar_in_process_context+0x37/0x150 kernel/workqueue.c:3327 rxe_elem_release +0x9f/0x180 controladores/infiniband/sw/rxe/rxe_pool.c:391 kref_put include/linux/kref.h:65 [en l\u00ednea] rxe_create_qp+0x2cd/0x310 controladores/infiniband/sw/rxe/rxe_verbs.c:425 controladores _ib_create_qp /infiniband/core/core_priv.h:331 [en l\u00ednea] ib_create_named_qp+0x2ad/0x1370 controladores/infiniband/core/verbs.c:1231 ib_create_qp include/rdma/ib_verbs.h:3644 [en l\u00ednea] create_mad_qp+0x177/0x2d0 controladores/infiniband /core/mad.c:2920 ib_mad_port_open drivers/infiniband/core/mad.c:3001 [en l\u00ednea] ib_mad_init_device+0xd6f/0x1400 drivers/infiniband/core/mad.c:3092 add_client_context+0x405/0x5e0 drivers/infiniband/core/ device.c:717 enable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1331 ib_register_device drivers/infiniband/core/device.c:1413 [en l\u00ednea] ib_register_device+0x7c7/0xa50 drivers/infiniband/core/device.c :1365 rxe_register_device+0x3d5/0x4a0 controladores/infiniband/sw/rxe/rxe_verbs.c:1147 rxe_add+0x12fe/0x16d0 controladores/infiniband/sw/rxe/rxe.c:247 rxe_net_add+0x8c/0xe0 controladores/infiniband/sw/r xe /rxe_net.c:503 controladores rxe_newlink/infiniband/sw/rxe/rxe.c:269 [en l\u00ednea] controladores rxe_newlink+0xb7/0xe0/infiniband/sw/rxe/rxe.c:250 controladores nldev_newlink+0x30e/0x550/infiniband/ core/nldev.c:1555 rdma_nl_rcv_msg+0x36d/0x690 controladores/infiniband/core/netlink.c:195 rdma_nl_rcv_skb controladores/infiniband/core/netlink.c:239 [en l\u00ednea] rdma_nl_rcv+0x2ee/0x430 controladores/infiniband/core/netlink .c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [en l\u00ednea] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket. c:654 [en l\u00ednea] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b 0 red/toma .c:2433 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 Entry_SYSCALL_64_after_hwframe+0 ---truncado---"}], "id": "CVE-2021-47078", "lastModified": "2026-06-17T04:16:24.637", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47078", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-03-06T15:32:35.393910Z", "version": "2.0.3"}}]}, "published": "2024-03-01T22:15:47.333", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/03344e843ab6dd3b3f2cadfb65ed910590856c70"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ee4d79c364914989c80de382c0b1a7259a7e4b3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/67f29896fdc83298eed5a6576ff8f9873f709228"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6a8086a42dfbf548a42bf2ae4faa291645c72c66"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a62225d951d77eb20208fed8fc199e0c9b1df08b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c65391dd9f0a47617e96e38bd27e277cbe1c40b0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3783c415bf6d2ead3d7aa2c38802bbe10723646"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: RDMA/rxe: Clear all QP fields if creation failed", "id": "2267529", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267529"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nRDMA/rxe: Clear all QP fields if creation failed\nrxe_qp_do_cleanup() relies on valid pointer values in QP for the properly\ncreated ones, but in case rxe_qp_from_init() failed it was filled with\ngarbage and caused tot the following error.\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 1 PID: 12560 at lib/refcount.c:28 refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\nModules linked in:\nCPU: 1 PID: 12560 Comm: syz-executor.4 Not tainted 5.12.0-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:refcount_warn_saturate+0x1d1/0x1e0 lib/refcount.c:28\nCode: e9 db fe ff ff 48 89 df e8 2c c2 ea fd e9 8a fe ff ff e8 72 6a a7 fd 48 c7 c7 e0 b2 c1 89 c6 05 dc 3a e6 09 01 e8 ee 74 fb 04 <0f> 0b e9 af fe ff ff 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55\nRSP: 0018:ffffc900097ceba8 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000040000 RSI: ffffffff815bb075 RDI: fffff520012f9d67\nRBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\nR10: ffffffff815b4eae R11: 0000000000000000 R12: ffff8880322a4800\nR13: ffff8880322a4940 R14: ffff888033044e00 R15: 0000000000000000\nFS: 00007f6eb2be3700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fdbe5d41000 CR3: 000000001d181000 CR4: 00000000001506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n__refcount_sub_and_test include/linux/refcount.h:283 [inline]\n__refcount_dec_and_test include/linux/refcount.h:315 [inline]\nrefcount_dec_and_test include/linux/refcount.h:333 [inline]\nkref_put include/linux/kref.h:64 [inline]\nrxe_qp_do_cleanup+0x96f/0xaf0 drivers/infiniband/sw/rxe/rxe_qp.c:805\nexecute_in_process_context+0x37/0x150 kernel/workqueue.c:3327\nrxe_elem_release+0x9f/0x180 drivers/infiniband/sw/rxe/rxe_pool.c:391\nkref_put include/linux/kref.h:65 [inline]\nrxe_create_qp+0x2cd/0x310 drivers/infiniband/sw/rxe/rxe_verbs.c:425\n_ib_create_qp drivers/infiniband/core/core_priv.h:331 [inline]\nib_create_named_qp+0x2ad/0x1370 drivers/infiniband/core/verbs.c:1231\nib_create_qp include/rdma/ib_verbs.h:3644 [inline]\ncreate_mad_qp+0x177/0x2d0 drivers/infiniband/core/mad.c:2920\nib_mad_port_open drivers/infiniband/core/mad.c:3001 [inline]\nib_mad_init_device+0xd6f/0x1400 drivers/infiniband/core/mad.c:3092\nadd_client_context+0x405/0x5e0 drivers/infiniband/core/device.c:717\nenable_device_and_get+0x1cd/0x3b0 drivers/infiniband/core/device.c:1331\nib_register_device drivers/infiniband/core/device.c:1413 [inline]\nib_register_device+0x7c7/0xa50 drivers/infiniband/core/device.c:1365\nrxe_register_device+0x3d5/0x4a0 drivers/infiniband/sw/rxe/rxe_verbs.c:1147\nrxe_add+0x12fe/0x16d0 drivers/infiniband/sw/rxe/rxe.c:247\nrxe_net_add+0x8c/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:503\nrxe_newlink drivers/infiniband/sw/rxe/rxe.c:269 [inline]\nrxe_newlink+0xb7/0xe0 drivers/infiniband/sw/rxe/rxe.c:250\nnldev_newlink+0x30e/0x550 drivers/infiniband/core/nldev.c:1555\nrdma_nl_rcv_msg+0x36d/0x690 drivers/infiniband/core/netlink.c:195\nrdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]\nrdma_nl_rcv+0x2ee/0x430 drivers/infiniband/core/netlink.c:259\nnetlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\nnetlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\nnetlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\nsock_sendmsg_nosec net/socket.c:654 [inline]\nsock_sendmsg+0xcf/0x120 net/socket.c:674\n____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\n___sys_sendmsg+0xf3/0x170 net/socket.c:2404\n__sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\ndo_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47\nentry_SYSCALL_64_after_hwframe+0\n---truncated---", "A use-after-free vulnerability was found in the Linux kernel, affecting the RDMA/rxe component. This issue occurs because the rxe_qp_do_cleanup() function depends on valid pointer values in the RXE QP structure. However, if that structure fails to initialize properly, it may populate with garbage values."], "name": "CVE-2021-47078", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47078\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47078\nhttps://lore.kernel.org/linux-cve-announce/2024030142-CVE-2021-47078-71f9@gregkh/T/#u"], "statement": "Red Hat Enterprise Linux 8 and 9 are not affected, as this vulnerability was already addressed in a previous release.", "threat_severity": "Moderate"}