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CVE-2026-46029

In the Linux kernel, the following vulnerability has been resolved: mm/slab: return NULL early from kmalloc_nolock() in NMI on UP On UP kernels (!CONFIG_SMP), spin_trylock() is a no-op that unconditionally succeeds even when the lock is already held. As a result, kmalloc_nolock() called from NMI context can re-enter the slab allocator and acquire n->list_lock that the interrupted context is already holding, corrupting slab state. With CONFIG_DEBUG_SPINLOCK on UP, the following BUG is triggere
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:663e083a6251ada71ba655d35cc0ff6bee6890a0a15301639504b66324867f2e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"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":"a8d95d274be241ad21f6523bf2d6ba0d7d7e46b7","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c18d08","versionType":"git"},{"lessThan":"d66553204a15bdb257d9ef8aca1e12f5fbb910b2","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c18d08","versionType":"git"},{"lessThan":"5b31044e649e3e54c2caef135c09b371c2fbcd08","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c1…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/affected/0

{"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":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/affected/1

Affected products and versions

2 source assertions
{"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":"a8d95d274be241ad21f6523bf2d6ba0d7d7e46b7","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c18d08","versionType":"git"},{"lessThan":"d66553204a15bdb257d9ef8aca1e12f5fbb910b2","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c18d08","versionType":"git"},{"lessThan":"5b31044e649e3e54c2caef135c09b371c2fbcd08","status":"affected","version":"af92793e52c3a99b828ed4bdd277fd3e11c1…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/affected/0
{"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":"6.18.27","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/metrics/0/cvssV3_1

Source references

3 source assertions
{"url":"https://git.kernel.org/stable/c/5b31044e649e3e54c2caef135c09b371c2fbcd08"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/a8d95d274be241ad21f6523bf2d6ba0d7d7e46b7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/d66553204a15bdb257d9ef8aca1e12f5fbb910b2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:758b26d7b8ea106c8469f642eb3cf0c343e3a94a1d32b4c437be0ffc9e18204c · sha256:b0b5f8307f33fe2b… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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