{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43211", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.993Z", "datePublished": "2026-05-06T11:28:14.423Z", "dateUpdated": "2026-05-06T11:28:14.423Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T11:28:14.423Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Fix pci_slot_trylock() error handling\n\nCommit a4e772898f8b (\"PCI: Add missing bridge lock to pci_bus_lock()\")\ndelegates the bridge device's pci_dev_trylock() to pci_bus_trylock() in\npci_slot_trylock(), but it forgets to remove the corresponding\npci_dev_unlock() when pci_bus_trylock() fails.\n\nBefore a4e772898f8b, the code did:\n\n if (!pci_dev_trylock(dev)) /* <- lock bridge device */\n goto unlock;\n if (dev->subordinate) {\n if (!pci_bus_trylock(dev->subordinate)) {\n pci_dev_unlock(dev); /* <- unlock bridge device */\n goto unlock;\n }\n }\n\nAfter a4e772898f8b the bridge-device lock is no longer taken, but the\npci_dev_unlock(dev) on the failure path was left in place, leading to the\nbug.\n\nThis yields one of two errors:\n\n 1. A warning that the lock is being unlocked when no one holds it.\n 2. An incorrect unlock of a lock that belongs to another thread.\n\nFix it by removing the now-redundant pci_dev_unlock(dev) on the failure\npath.\n\n[Same patch later posted by Keith at\nhttps://patch.msgid.link/[email protected]]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/pci.c"], "versions": [{"version": "e2355d513b89a2cb511b4ded0deb426cdb01acd0", "lessThan": "ebb27b7399ab8b9eb1f792b329aa5f6250c590d4", "status": "affected", "versionType": "git"}, {"version": "04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945", "lessThan": "fbe06a3058114bf95a17a4941b205f4b321c6f0a", "status": "affected", "versionType": "git"}, {"version": "7253b4fed46471cc247c6cacefac890a8472c083", "lessThan": "943ed56606a7ab2fe5a99cad572dd17d484310c7", "status": "affected", "versionType": "git"}, {"version": "78c6e39fef5c428960aff742149bba302dd46f5a", "lessThan": "a19b61fdb958ffadbba85b43c991eb9fc70c1c1c", "status": "affected", "versionType": "git"}, {"version": "a4e772898f8bf2e7e1cf661a12c60a5612c4afab", "lessThan": "0425aaf20b407d2f2cf3bf469808e4a35f9abb8b", "status": "affected", "versionType": "git"}, {"version": "a4e772898f8bf2e7e1cf661a12c60a5612c4afab", "lessThan": "bd435f4b738130d732ef64e0e57e45185f77165d", "status": "affected", "versionType": "git"}, {"version": "a4e772898f8bf2e7e1cf661a12c60a5612c4afab", "lessThan": "8b08ea9690b212b7bf7f12414039259cf34b1aa0", "status": "affected", "versionType": "git"}, {"version": "a4e772898f8bf2e7e1cf661a12c60a5612c4afab", "lessThan": "9368d1ee62829b08aa31836b3ca003803caf0b72", "status": "affected", "versionType": "git"}, {"version": "0790b89c7e911003b8c50ae50e3ac7645de1fae9", "status": "affected", "versionType": "git"}, {"version": "df77a678c33871a6e4ac5b54a71662f1d702335b", "status": "affected", "versionType": "git"}, {"version": "81c68e218ab883dfa368460a59b674084c0240da", "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/pci/pci.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.252", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.202", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.165", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.128", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.75", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.16", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.6", "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": "5.10.226", "versionEndExcluding": "5.10.252"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.167", "versionEndExcluding": "5.15.202"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.110", "versionEndExcluding": "6.1.165"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.51", "versionEndExcluding": "6.6.128"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.12.75"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.19.322"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.284"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ebb27b7399ab8b9eb1f792b329aa5f6250c590d4"}, {"url": "https://git.kernel.org/stable/c/fbe06a3058114bf95a17a4941b205f4b321c6f0a"}, {"url": "https://git.kernel.org/stable/c/943ed56606a7ab2fe5a99cad572dd17d484310c7"}, {"url": "https://git.kernel.org/stable/c/a19b61fdb958ffadbba85b43c991eb9fc70c1c1c"}, {"url": "https://git.kernel.org/stable/c/0425aaf20b407d2f2cf3bf469808e4a35f9abb8b"}, {"url": "https://git.kernel.org/stable/c/bd435f4b738130d732ef64e0e57e45185f77165d"}, {"url": "https://git.kernel.org/stable/c/8b08ea9690b212b7bf7f12414039259cf34b1aa0"}, {"url": "https://git.kernel.org/stable/c/9368d1ee62829b08aa31836b3ca003803caf0b72"}], "title": "PCI: Fix pci_slot_trylock() error handling", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Fix pci_slot_trylock() error handling\n\nCommit a4e772898f8b (\"PCI: Add missing bridge lock to pci_bus_lock()\")\ndelegates the bridge device's pci_dev_trylock() to pci_bus_trylock() in\npci_slot_trylock(), but it forgets to remove the corresponding\npci_dev_unlock() when pci_bus_trylock() fails.\n\nBefore a4e772898f8b, the code did:\n\n if (!pci_dev_trylock(dev)) /* <- lock bridge device */\n goto unlock;\n if (dev->subordinate) {\n if (!pci_bus_trylock(dev->subordinate)) {\n pci_dev_unlock(dev); /* <- unlock bridge device */\n goto unlock;\n }\n }\n\nAfter a4e772898f8b the bridge-device lock is no longer taken, but the\npci_dev_unlock(dev) on the failure path was left in place, leading to the\nbug.\n\nThis yields one of two errors:\n\n 1. A warning that the lock is being unlocked when no one holds it.\n 2. An incorrect unlock of a lock that belongs to another thread.\n\nFix it by removing the now-redundant pci_dev_unlock(dev) on the failure\npath.\n\n[Same patch later posted by Keith at\nhttps://patch.msgid.link/[email protected]]"}], "id": "CVE-2026-43211", "lastModified": "2026-05-06T13:07:51.607", "metrics": {}, "published": "2026-05-06T12:16:40.527", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0425aaf20b407d2f2cf3bf469808e4a35f9abb8b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b08ea9690b212b7bf7f12414039259cf34b1aa0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9368d1ee62829b08aa31836b3ca003803caf0b72"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/943ed56606a7ab2fe5a99cad572dd17d484310c7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a19b61fdb958ffadbba85b43c991eb9fc70c1c1c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd435f4b738130d732ef64e0e57e45185f77165d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebb27b7399ab8b9eb1f792b329aa5f6250c590d4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fbe06a3058114bf95a17a4941b205f4b321c6f0a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: PCI: Fix pci_slot_trylock() error handling", "id": "2467187", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467187"}, "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-832", "details": ["A flaw was found in the Linux kernel. An error in the PCI (Peripheral Component Interconnect) subsystem's lock management, specifically within the pci_slot_trylock() function, can lead to system instability. This occurs when a lock is incorrectly released, potentially causing warnings or interfering with other processes. A local attacker could exploit this to cause a denial of service."], "name": "CVE-2026-43211", "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": "Out of support scope", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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": "2026-05-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43211\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43211\nhttps://lore.kernel.org/linux-cve-announce/2026050649-CVE-2026-43211-5383@gregkh/T"], "threat_severity": "Low"}