CVE-2026-43285

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43285", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.999Z", "datePublished": "2026-05-08T13:11:11.191Z", "dateUpdated": "2026-05-11T22:21:36.072Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:21:36.072Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slab: do not access current->mems_allowed_seq if !allow_spin\n\nLockdep complains when get_from_any_partial() is called in an NMI\ncontext, because current->mems_allowed_seq is seqcount_spinlock_t and\nnot NMI-safe:\n\n ================================\n WARNING: inconsistent lock state\n 6.19.0-rc5-kfree-rcu+ #315 Tainted: G N\n --------------------------------\n inconsistent {INITIAL USE} -> {IN-NMI} usage.\n kunit_try_catch/9989 [HC1[1]:SC0[0]:HE0:SE1] takes:\n ffff889085799820 (&____s->seqcount#3){.-.-}-{0:0}, at: ___slab_alloc+0x58f/0xc00\n {INITIAL USE} state was registered at:\n lock_acquire+0x185/0x320\n kernel_init_freeable+0x391/0x1150\n kernel_init+0x1f/0x220\n ret_from_fork+0x736/0x8f0\n ret_from_fork_asm+0x1a/0x30\n irq event stamp: 56\n hardirqs last enabled at (55): [<ffffffff850a68d7>] _raw_spin_unlock_irq+0x27/0x70\n hardirqs last disabled at (56): [<ffffffff850858ca>] __schedule+0x2a8a/0x6630\n softirqs last enabled at (0): [<ffffffff81536711>] copy_process+0x1dc1/0x6a10\n softirqs last disabled at (0): [<0000000000000000>] 0x0\n\n other info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&____s->seqcount#3);\n <Interrupt>\n lock(&____s->seqcount#3);\n\n *** DEADLOCK ***\n\nAccording to Documentation/locking/seqlock.rst, seqcount_t is not\nNMI-safe and seqcount_latch_t should be used when read path can interrupt\nthe write-side critical section. In this case, do not access\ncurrent->mems_allowed_seq and avoid retry."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "lessThan": "353dd9934447b9193643ae1afd938607a74d4915", "status": "affected", "versionType": "git"}, {"version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "lessThan": "efd767ddcef0669bbd33c6a823ea0a88f06d4b29", "status": "affected", "versionType": "git"}, {"version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "lessThan": "144080a5823b2dbd635acb6decf7ab23182664f3", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/slub.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "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": "6.18", "versionEndExcluding": "6.18.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "6.19.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/353dd9934447b9193643ae1afd938607a74d4915"}, {"url": "https://git.kernel.org/stable/c/efd767ddcef0669bbd33c6a823ea0a88f06d4b29"}, {"url": "https://git.kernel.org/stable/c/144080a5823b2dbd635acb6decf7ab23182664f3"}], "title": "mm/slab: do not access current->mems_allowed_seq if !allow_spin", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["mm/slub.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "353dd9934447b9193643ae1afd938607a74d4915", "status": "affected", "version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "versionType": "git"}, {"lessThan": "efd767ddcef0669bbd33c6a823ea0a88f06d4b29", "status": "affected", "version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "versionType": "git"}, {"lessThan": "144080a5823b2dbd635acb6decf7ab23182664f3", "status": "affected", "version": "af92793e52c3a99b828ed4bdd277fd3e11c18d08", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["mm/slub.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.16", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E0D300DB-AA68-4962-981D-EF9F5E97AACF", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slab: do not access current->mems_allowed_seq if !allow_spin\n\nLockdep complains when get_from_any_partial() is called in an NMI\ncontext, because current->mems_allowed_seq is seqcount_spinlock_t and\nnot NMI-safe:\n\n ================================\n WARNING: inconsistent lock state\n 6.19.0-rc5-kfree-rcu+ #315 Tainted: G N\n --------------------------------\n inconsistent {INITIAL USE} -> {IN-NMI} usage.\n kunit_try_catch/9989 [HC1[1]:SC0[0]:HE0:SE1] takes:\n ffff889085799820 (&____s->seqcount#3){.-.-}-{0:0}, at: ___slab_alloc+0x58f/0xc00\n {INITIAL USE} state was registered at:\n lock_acquire+0x185/0x320\n kernel_init_freeable+0x391/0x1150\n kernel_init+0x1f/0x220\n ret_from_fork+0x736/0x8f0\n ret_from_fork_asm+0x1a/0x30\n irq event stamp: 56\n hardirqs last enabled at (55): [<ffffffff850a68d7>] _raw_spin_unlock_irq+0x27/0x70\n hardirqs last disabled at (56): [<ffffffff850858ca>] __schedule+0x2a8a/0x6630\n softirqs last enabled at (0): [<ffffffff81536711>] copy_process+0x1dc1/0x6a10\n softirqs last disabled at (0): [<0000000000000000>] 0x0\n\n other info that might help us debug this:\n Possible unsafe locking scenario:\n\n CPU0\n ----\n lock(&____s->seqcount#3);\n <Interrupt>\n lock(&____s->seqcount#3);\n\n *** DEADLOCK ***\n\nAccording to Documentation/locking/seqlock.rst, seqcount_t is not\nNMI-safe and seqcount_latch_t should be used when read path can interrupt\nthe write-side critical section. In this case, do not access\ncurrent->mems_allowed_seq and avoid retry."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: mm/slab: no acceder a current -> mems_allowed_seq si !allow_spin Lockdep se queja cuando se llama a get_from_any_partial() en un contexto NMI, porque current -> mems_allowed_seq es seqcount_spinlock_t y no es seguro para NMI: ================================ WARNING: inconsistent lock state 6.19.0-rc5-kfree-rcu+ #315 Tainted: G N -------------------------------- inconsistent {INITIAL USE} -> {IN-NMI} usage. kunit_try_catch/9989 [HC1[1]:SC0[0]:HE0:SE1] takes: ffff889085799820 ( y ____s -> seqcount#3){.-.-}-{0:0}, at: ___slab_alloc+0x58f/0xc00 {INITIAL USE} state was registered at: lock_acquire+0x185/0x320 kernel_init_freeable+0x391/0x 1150 kernel_init+0x1f/0x220 ret_from_fork+0x736/0x8f0 ret_from_fork_asm+0x1a/0x30 irq event stamp: 56 hardirqs last enabled at (55): [[ffffffff850a68d7]] _raw_spin_unlock_irq+0x27/0x70 hardirqs last disabled at (56): [[ffffffff850858ca]] __schedule+0x 2a8a/0x 6630 softirqs last enabled at (0): [[ffffffff81536711]] copy_process+0x 1dc1/0x 6a10 softirqs last disabled at (0): [menor que 0000000000000000>] 0x0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock( y ____s -> seqcount#3); [Interrupt] lock( y ____s -> seqcount#3); * DEADLOCK * Seg\u00fan Documentation/locking/seqlock.rst, seqcount_t no es seguro para NMI y se debe usar seqcount_latch_t cuando la ruta de lectura puede interrumpir la secci\u00f3n cr\u00edtica del lado de escritura. En este caso, no acceder a current -> mems_allowed_seq y evitar reintentos."}], "id": "CVE-2026-43285", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-05-08T14:16:35.337", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/144080a5823b2dbd635acb6decf7ab23182664f3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/353dd9934447b9193643ae1afd938607a74d4915"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/efd767ddcef0669bbd33c6a823ea0a88f06d4b29"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: mm/slab: do not access current->mems_allowed_seq if !allow_spin", "id": "2468046", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2468046"}, "csaw": false, "cwe": "CWE-833", "details": ["A flaw was found in the Linux kernel. An inconsistent lock state within the `mm/slab` subsystem, specifically when `get_from_any_partial()` is called in a Non-Maskable Interrupt (NMI) context, can lead to a deadlock. This vulnerability can result in a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-43285", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "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": "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": "2026-05-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-43285\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-43285\nhttps://lore.kernel.org/linux-cve-announce/2026050850-CVE-2026-43285-4680@gregkh/T"]}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af92793e52c3a99b828ed4bdd277fd3e11c18d08,353dd9934447b9193643ae1afd938607a74d4915)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af92793e52c3a99b828ed4bdd277fd3e11c18d08,efd767ddcef0669bbd33c6a823ea0a88f06d4b29)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[af92793e52c3a99b828ed4bdd277fd3e11c18d08,144080a5823b2dbd635acb6decf7ab23182664f3)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.16,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.6,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-08T15:00:13.661529+00:00", "updated": "2026-05-14T21:15:16.385468+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}