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CVE-2026-43490

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate inherited ACE SID length smb_inherit_dacl() walks the parent directory DACL loaded from the security descriptor xattr. It verifies that each ACE contains the fixed SID header before using it, but does not verify that the variable-length SID described by sid.num_subauth is fully contained in the ACE. A malformed inheritable ACE can advertise more subauthorities than are present in the ACE. compare_sids() may th
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e8d30a5cb3cb015c2ea3164735b35236becb33a87015ff6fadc23f3b61d673ae
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":"affected","product":"Linux","programFiles":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThan…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a7fb771314fb3a265d30f8ac245869a367ab065c","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"47c6e37a77b10e74f70d845ba4ea5d3cafa00336","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"1aa60fea7f637c071f529ad6784aecca2f2f0c5f","status":"affected","version":"e2f34481b24db2fd634b5ed…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.88","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.30","versionType":"semver"},{"lessThan…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/smbacl.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a7fb771314fb3a265d30f8ac245869a367ab065c","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"47c6e37a77b10e74f70d845ba4ea5d3cafa00336","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"1aa60fea7f637c071f529ad6784aecca2f2f0c5f","status":"affected","version":"e2f34481b24db2fd634b5ed…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/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:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/1aa60fea7f637c071f529ad6784aecca2f2f0c5f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/47c6e37a77b10e74f70d845ba4ea5d3cafa00336"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/996454bc0da84d5a1dedb1a7861823087e01a7ae"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/a7fb771314fb3a265d30f8ac245869a367ab065c"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/c1d95c995d5bcb24b639200a899eda59cb1e6d64"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a66cae9c533e1433f4eb391c622b74b282d3a42415c67db58bc96b03cf8ceef1 · sha256:87733796264d0757… · /containers/cna/references/3

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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