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CVE-2026-31432

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix OOB write in QUERY_INFO for compound requests When a compound request such as READ + QUERY_INFO(Security) is received, and the first command (READ) consumes most of the response buffer, ksmbd could write beyond the allocated buffer while building a security descriptor. The root cause was that smb2_get_info_sec() checked buffer space using ppntsd_size from xattr, while build_sec_desc() often synthesized a significan
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:749227a1094da1bbe51a4c43203db3acf7daeaf3dd60e2f608b1d2449de69c61
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/smb2pdu.c","fs/smb/server/smbacl.c","fs/smb/server/smbacl.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","vers…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c","fs/smb/server/smbacl.c","fs/smb/server/smbacl.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"850452af77f55d185f9445e1f7a1db53c5e4aad4","status":"affected","version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","versionType":"git"},{"lessThan":"d48c64fb80ad78b3dd29fb7d79b6ec7bd72bfc09","status":"affected","version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","versionType":"git"},{"lessThan":"075ea208c648cc2bcd616295b711d3637c61de45","st…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c","fs/smb/server/smbacl.c","fs/smb/server/smbacl.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","vers…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c","fs/smb/server/smbacl.c","fs/smb/server/smbacl.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"850452af77f55d185f9445e1f7a1db53c5e4aad4","status":"affected","version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","versionType":"git"},{"lessThan":"d48c64fb80ad78b3dd29fb7d79b6ec7bd72bfc09","status":"affected","version":"e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d","versionType":"git"},{"lessThan":"075ea208c648cc2bcd616295b711d3637c61de45","st…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /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:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions
{"url":"https://git.kernel.org/stable/c/075ea208c648cc2bcd616295b711d3637c61de45"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/515c2daab46021221bdf406bef19bc90a44ec617"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/850452af77f55d185f9445e1f7a1db53c5e4aad4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/d48c64fb80ad78b3dd29fb7d79b6ec7bd72bfc09"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/fda9522ed6afaec45cabc198d8492270c394c7bc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0fec139f6570a7b92c8a19ccd27553a0e446fb585d0d61a1b4672a6140d4a56d · sha256:a0ba77afbddf08e4… · /containers/cna/references/4

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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