{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98489", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.352Z", "datePublished": "2026-10-18T15:16:16.084Z", "dateUpdated": "2026-10-19T09:20:26.482Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:20:26.482Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atl1c: fix soft lockup on out-of-range tpd_cons read\n\nThe hardware can report an out-of-range tpd_cons (seen as 0xffff)\nwhile the PCIe link/MAC is resetting. An out-of-range value can\nnever be reached and the loop below would spin forever. To avoid\na soft lockup treat it as \"nothing new to clean\" instead.\n\nReproduced on two machines, same NIC (Qualcomm Atheros AR8151 v2.0,\n4-port), triggered by rebooting a Mikrotik CCR2004 PCIe card that\nthe ports are directly linked to:\n\n- Ubuntu 26.04.1 LTS, kernel 7.0.0-31-generic. The link-flap\n precursor, before the lockup was captured with a full trace\n elsewhere:\n\n atl1c 0000:05:00.0 enp5s0f0: NETDEV WATCHDOG: CPU: 4: transmit queue 2 timed out 489984 ms\n atl1c 0000:05:00.0: MAC state machine can't be idle since disabled for 10ms second\n atl1c 0000:05:00.0: atl1c: enp5s0f0 NIC Link is Up<65535 Mbps Full Duplex>\n\n 65535 (0xffff) here is the same value tpd_cons reads back once the\n loop below gets stuck.\n\n- Proxmox VE, kernel 7.0.14-11-pve. Same NIC/trigger, this time\n caught by the soft lockup watchdog with a full stack trace:\n\n watchdog: BUG: soft lockup - CPU#12 stuck for 354s! [napi/eth%d-0:329]\n CPU: 12 UID: 0 PID: 329 Comm: napi/eth%d-0 Tainted: P O L 7.0.14-11-pve #1 PREEMPT(lazy)\n RIP: 0010:atl1c_clean_tx+0x142/0x2d0 [atl1c]\n Call Trace:\n <TASK>\n __napi_poll+0x32/0x1e0\n napi_threaded_poll_loop+0x286/0x2e0\n napi_threaded_poll+0xfd/0x140\n kthread+0xf7/0x130\n ret_from_fork+0x2da/0x3a0\n ret_from_fork_asm+0x1a/0x30\n </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/atheros/atl1c/atl1c_main.c"], "versions": [{"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "5ea2576a4f5ec476f33169fdbe9090d2b038ad13", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "4daf80da0c38b8cd92c111ad96cb38322aabf586", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "57b55367b6e3accc55a989afeaf127063e3614dc", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "9f2cc71a2e2799d9c993c73f1bd36507eef6ae43", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "586847400b1168a88917287ac02c2c91a620b841", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "d4ab263e40fcf7cfa38a43ec774067d32eb94e16", "status": "affected", "versionType": "git"}, {"version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "lessThan": "36c2009d90f2210ef92e6f4f2850e8b57b09e754", "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/net/ethernet/atheros/atl1c/atl1c_main.c"], "versions": [{"version": "2.6.29", "status": "affected"}, {"version": "0", "lessThan": "2.6.29", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "2.6.29", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.29", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f"}, {"url": "https://git.kernel.org/stable/c/5ea2576a4f5ec476f33169fdbe9090d2b038ad13"}, {"url": "https://git.kernel.org/stable/c/4daf80da0c38b8cd92c111ad96cb38322aabf586"}, {"url": "https://git.kernel.org/stable/c/57b55367b6e3accc55a989afeaf127063e3614dc"}, {"url": "https://git.kernel.org/stable/c/9f2cc71a2e2799d9c993c73f1bd36507eef6ae43"}, {"url": "https://git.kernel.org/stable/c/586847400b1168a88917287ac02c2c91a620b841"}, {"url": "https://git.kernel.org/stable/c/d4ab263e40fcf7cfa38a43ec774067d32eb94e16"}, {"url": "https://git.kernel.org/stable/c/36c2009d90f2210ef92e6f4f2850e8b57b09e754"}], "title": "net: atl1c: fix soft lockup on out-of-range tpd_cons read", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/atheros/atl1c/atl1c_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "5ea2576a4f5ec476f33169fdbe9090d2b038ad13", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "4daf80da0c38b8cd92c111ad96cb38322aabf586", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "57b55367b6e3accc55a989afeaf127063e3614dc", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "9f2cc71a2e2799d9c993c73f1bd36507eef6ae43", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "586847400b1168a88917287ac02c2c91a620b841", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "d4ab263e40fcf7cfa38a43ec774067d32eb94e16", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}, {"lessThan": "36c2009d90f2210ef92e6f4f2850e8b57b09e754", "status": "affected", "version": "43250ddd75a35d1f7926d989a10fefd30c37eaa7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/atheros/atl1c/atl1c_main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"lessThan": "2.6.29", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atl1c: fix soft lockup on out-of-range tpd_cons read\n\nThe hardware can report an out-of-range tpd_cons (seen as 0xffff)\nwhile the PCIe link/MAC is resetting. An out-of-range value can\nnever be reached and the loop below would spin forever. To avoid\na soft lockup treat it as \"nothing new to clean\" instead.\n\nReproduced on two machines, same NIC (Qualcomm Atheros AR8151 v2.0,\n4-port), triggered by rebooting a Mikrotik CCR2004 PCIe card that\nthe ports are directly linked to:\n\n- Ubuntu 26.04.1 LTS, kernel 7.0.0-31-generic. The link-flap\n precursor, before the lockup was captured with a full trace\n elsewhere:\n\n atl1c 0000:05:00.0 enp5s0f0: NETDEV WATCHDOG: CPU: 4: transmit queue 2 timed out 489984 ms\n atl1c 0000:05:00.0: MAC state machine can't be idle since disabled for 10ms second\n atl1c 0000:05:00.0: atl1c: enp5s0f0 NIC Link is Up<65535 Mbps Full Duplex>\n\n 65535 (0xffff) here is the same value tpd_cons reads back once the\n loop below gets stuck.\n\n- Proxmox VE, kernel 7.0.14-11-pve. Same NIC/trigger, this time\n caught by the soft lockup watchdog with a full stack trace:\n\n watchdog: BUG: soft lockup - CPU#12 stuck for 354s! [napi/eth%d-0:329]\n CPU: 12 UID: 0 PID: 329 Comm: napi/eth%d-0 Tainted: P O L 7.0.14-11-pve #1 PREEMPT(lazy)\n RIP: 0010:atl1c_clean_tx+0x142/0x2d0 [atl1c]\n Call Trace:\n <TASK>\n __napi_poll+0x32/0x1e0\n napi_threaded_poll_loop+0x286/0x2e0\n napi_threaded_poll+0xfd/0x140\n kthread+0xf7/0x130\n ret_from_fork+0x2da/0x3a0\n ret_from_fork_asm+0x1a/0x30\n </TASK>"}], "id": "CVE-2026-98489", "lastModified": "2026-10-19T10:19:00.667", "metrics": {}, "published": "2026-10-18T16:16:59.733", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/36c2009d90f2210ef92e6f4f2850e8b57b09e754"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4daf80da0c38b8cd92c111ad96cb38322aabf586"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/57b55367b6e3accc55a989afeaf127063e3614dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/586847400b1168a88917287ac02c2c91a620b841"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ea2576a4f5ec476f33169fdbe9090d2b038ad13"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f2cc71a2e2799d9c993c73f1bd36507eef6ae43"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d4ab263e40fcf7cfa38a43ec774067d32eb94e16"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e7acd4cdeccbcdfd407adeb72b1eba14d1145b6f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: atl1c: fix soft lockup on out-of-range tpd_cons read", "id": "2554881", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554881"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: atl1c: fix soft lockup on out-of-range tpd_cons read\nThe hardware can report an out-of-range tpd_cons (seen as 0xffff)\nwhile the PCIe link/MAC is resetting. An out-of-range value can\nnever be reached and the loop below would spin forever. To avoid\na soft lockup treat it as \"nothing new to clean\" instead.\nReproduced on two machines, same NIC (Qualcomm Atheros AR8151 v2.0,\n4-port), triggered by rebooting a Mikrotik CCR2004 PCIe card that\nthe ports are directly linked to:\n- Ubuntu 26.04.1 LTS, kernel 7.0.0-31-generic. The link-flap\nprecursor, before the lockup was captured with a full trace\nelsewhere:\natl1c 0000:05:00.0 enp5s0f0: NETDEV WATCHDOG: CPU: 4: transmit queue 2 timed out 489984 ms\natl1c 0000:05:00.0: MAC state machine can't be idle since disabled for 10ms second\natl1c 0000:05:00.0: atl1c: enp5s0f0 NIC Link is Up<65535 Mbps Full Duplex>\n65535 (0xffff) here is the same value tpd_cons reads back once the\nloop below gets stuck.\n- Proxmox VE, kernel 7.0.14-11-pve. Same NIC/trigger, this time\ncaught by the soft lockup watchdog with a full stack trace:\nwatchdog: BUG: soft lockup - CPU#12 stuck for 354s! [napi/eth%d-0:329]\nCPU: 12 UID: 0 PID: 329 Comm: napi/eth%d-0 Tainted: P O L 7.0.14-11-pve #1 PREEMPT(lazy)\nRIP: 0010:atl1c_clean_tx+0x142/0x2d0 [atl1c]\nCall Trace:\n<TASK>\n__napi_poll+0x32/0x1e0\nnapi_threaded_poll_loop+0x286/0x2e0\nnapi_threaded_poll+0xfd/0x140\nkthread+0xf7/0x130\nret_from_fork+0x2da/0x3a0\nret_from_fork_asm+0x1a/0x30\n</TASK>", "A flaw was found in the Linux kernel's atl1c network driver. When an interface experiences a link reset or link flapping, the hardware can return an out-of-range descriptor value that the driver fails to validate. An adjacent entity capable of triggering network link state changes can exploit this behavior, causing the transmit cleanup routine to enter an infinite loop. This failure locks up the CPU, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-98489", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98489\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98489\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98489.mbox"], "threat_severity": "Moderate"}