{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31647", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.127Z", "datePublished": "2026-04-24T14:45:00.734Z", "dateUpdated": "2026-04-24T14:45:00.734Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-24T14:45:00.734Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling\n\nSwitch from using the completion's raw spinlock to a local lock in the\nidpf_vc_xn struct. The conversion is safe because complete/_all() are\ncalled outside the lock and there is no reason to share the completion\nlock in the current logic. This avoids invalid wait context reported by\nthe kernel due to the async handler taking BH spinlock:\n\n[ 805.726977] =============================\n[ 805.726991] [ BUG: Invalid wait context ]\n[ 805.727006] 7.0.0-rc2-net-devq-031026+ #28 Tainted: G S OE\n[ 805.727026] -----------------------------\n[ 805.727038] kworker/u261:0/572 is trying to lock:\n[ 805.727051] ff190da6a8dbb6a0 (&vport_config->mac_filter_list_lock){+...}-{3:3}, at: idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727099] other info that might help us debug this:\n[ 805.727111] context-{5:5}\n[ 805.727119] 3 locks held by kworker/u261:0/572:\n[ 805.727132] #0: ff190da6db3e6148 ((wq_completion)idpf-0000:83:00.0-mbx){+.+.}-{0:0}, at: process_one_work+0x4b5/0x730\n[ 805.727163] #1: ff3c6f0a6131fe50 ((work_completion)(&(&adapter->mbx_task)->work)){+.+.}-{0:0}, at: process_one_work+0x1e5/0x730\n[ 805.727191] #2: ff190da765190020 (&x->wait#34){+.+.}-{2:2}, at: idpf_recv_mb_msg+0xc8/0x710 [idpf]\n[ 805.727218] stack backtrace:\n...\n[ 805.727238] Workqueue: idpf-0000:83:00.0-mbx idpf_mbx_task [idpf]\n[ 805.727247] Call Trace:\n[ 805.727249] <TASK>\n[ 805.727251] dump_stack_lvl+0x77/0xb0\n[ 805.727259] __lock_acquire+0xb3b/0x2290\n[ 805.727268] ? __irq_work_queue_local+0x59/0x130\n[ 805.727275] lock_acquire+0xc6/0x2f0\n[ 805.727277] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727284] ? _printk+0x5b/0x80\n[ 805.727290] _raw_spin_lock_bh+0x38/0x50\n[ 805.727298] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727303] idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727310] idpf_recv_mb_msg+0x1c8/0x710 [idpf]\n[ 805.727317] process_one_work+0x226/0x730\n[ 805.727322] worker_thread+0x19e/0x340\n[ 805.727325] ? __pfx_worker_thread+0x10/0x10\n[ 805.727328] kthread+0xf4/0x130\n[ 805.727333] ? __pfx_kthread+0x10/0x10\n[ 805.727336] ret_from_fork+0x32c/0x410\n[ 805.727345] ? __pfx_kthread+0x10/0x10\n[ 805.727347] ret_from_fork_asm+0x1a/0x30\n[ 805.727354] </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/intel/idpf/idpf_virtchnl.c", "drivers/net/ethernet/intel/idpf/idpf_virtchnl.h"], "versions": [{"version": "34c21fa894a1af6166f4284c81d1dc21efed8f38", "lessThan": "b448529f2f2921c6fe82fd4e985cc7c05cbf02a3", "status": "affected", "versionType": "git"}, {"version": "34c21fa894a1af6166f4284c81d1dc21efed8f38", "lessThan": "e02c974fc331f04b5ba2007d4bc6862df8a43148", "status": "affected", "versionType": "git"}, {"version": "34c21fa894a1af6166f4284c81d1dc21efed8f38", "lessThan": "3bb632c6b6d8154e9019beda4a43a4b518ee3e8a", "status": "affected", "versionType": "git"}, {"version": "34c21fa894a1af6166f4284c81d1dc21efed8f38", "lessThan": "591478118293c1bd628de330a99eb1eb2ef8d76b", "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/intel/idpf/idpf_virtchnl.c", "drivers/net/ethernet/intel/idpf/idpf_virtchnl.h"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.23", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.13", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "6.9", "versionEndExcluding": "6.12.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.18.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.19.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/b448529f2f2921c6fe82fd4e985cc7c05cbf02a3"}, {"url": "https://git.kernel.org/stable/c/e02c974fc331f04b5ba2007d4bc6862df8a43148"}, {"url": "https://git.kernel.org/stable/c/3bb632c6b6d8154e9019beda4a43a4b518ee3e8a"}, {"url": "https://git.kernel.org/stable/c/591478118293c1bd628de330a99eb1eb2ef8d76b"}], "title": "idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling\n\nSwitch from using the completion's raw spinlock to a local lock in the\nidpf_vc_xn struct. The conversion is safe because complete/_all() are\ncalled outside the lock and there is no reason to share the completion\nlock in the current logic. This avoids invalid wait context reported by\nthe kernel due to the async handler taking BH spinlock:\n\n[ 805.726977] =============================\n[ 805.726991] [ BUG: Invalid wait context ]\n[ 805.727006] 7.0.0-rc2-net-devq-031026+ #28 Tainted: G S OE\n[ 805.727026] -----------------------------\n[ 805.727038] kworker/u261:0/572 is trying to lock:\n[ 805.727051] ff190da6a8dbb6a0 (&vport_config->mac_filter_list_lock){+...}-{3:3}, at: idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727099] other info that might help us debug this:\n[ 805.727111] context-{5:5}\n[ 805.727119] 3 locks held by kworker/u261:0/572:\n[ 805.727132] #0: ff190da6db3e6148 ((wq_completion)idpf-0000:83:00.0-mbx){+.+.}-{0:0}, at: process_one_work+0x4b5/0x730\n[ 805.727163] #1: ff3c6f0a6131fe50 ((work_completion)(&(&adapter->mbx_task)->work)){+.+.}-{0:0}, at: process_one_work+0x1e5/0x730\n[ 805.727191] #2: ff190da765190020 (&x->wait#34){+.+.}-{2:2}, at: idpf_recv_mb_msg+0xc8/0x710 [idpf]\n[ 805.727218] stack backtrace:\n...\n[ 805.727238] Workqueue: idpf-0000:83:00.0-mbx idpf_mbx_task [idpf]\n[ 805.727247] Call Trace:\n[ 805.727249] <TASK>\n[ 805.727251] dump_stack_lvl+0x77/0xb0\n[ 805.727259] __lock_acquire+0xb3b/0x2290\n[ 805.727268] ? __irq_work_queue_local+0x59/0x130\n[ 805.727275] lock_acquire+0xc6/0x2f0\n[ 805.727277] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727284] ? _printk+0x5b/0x80\n[ 805.727290] _raw_spin_lock_bh+0x38/0x50\n[ 805.727298] ? idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727303] idpf_mac_filter_async_handler+0xe9/0x260 [idpf]\n[ 805.727310] idpf_recv_mb_msg+0x1c8/0x710 [idpf]\n[ 805.727317] process_one_work+0x226/0x730\n[ 805.727322] worker_thread+0x19e/0x340\n[ 805.727325] ? __pfx_worker_thread+0x10/0x10\n[ 805.727328] kthread+0xf4/0x130\n[ 805.727333] ? __pfx_kthread+0x10/0x10\n[ 805.727336] ret_from_fork+0x32c/0x410\n[ 805.727345] ? __pfx_kthread+0x10/0x10\n[ 805.727347] ret_from_fork_asm+0x1a/0x30\n[ 805.727354] </TASK>"}], "id": "CVE-2026-31647", "lastModified": "2026-04-24T17:51:40.810", "metrics": {}, "published": "2026-04-24T15:16:44.073", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3bb632c6b6d8154e9019beda4a43a4b518ee3e8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/591478118293c1bd628de330a99eb1eb2ef8d76b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b448529f2f2921c6fe82fd4e985cc7c05cbf02a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e02c974fc331f04b5ba2007d4bc6862df8a43148"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling", "id": "2461570", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461570"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["A flaw was found in the Linux kernel's idpf driver. This vulnerability arises from improper nesting of spinlocks during asynchronous Virtual Channel (VC) handling. An attacker could potentially trigger an invalid wait context, leading to a system crash or denial of service."], "name": "CVE-2026-31647", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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"}], "public_date": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31647\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31647\nhttps://lore.kernel.org/linux-cve-announce/2026042459-CVE-2026-31647-3188@gregkh/T"], "threat_severity": "Moderate"}