CVE Explorer

CVE-2026-31478

In the Linux kernel, the following vulnerability has been resolved: ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len() After this commit (e2b76ab8b5c9 "ksmbd: add support for read compound"), response buffer management was changed to use dynamic iov array. In the new design, smb2_calc_max_out_buf_len() expects the second argument (hdr2_len) to be the offset of ->Buffer field in the response structure, not a hardcoded magic number. Fix the remaining call sites to u

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:75e088a07360be312b1eb157b682b255ff71f13c3f4f109d66f9a4fccc9c30bc

Known exploited

Not asserted

Disputed

Stale source

Conflicts

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"],"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":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanO…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"70b4c414889492c522b6e4331562360f49be2361","status":"affected","version":"f2283680a80571ca82d710bc6ecd8f8beac67d63","versionType":"git"},{"lessThan":"9a7166f0ef8cbb7bb48dd05e2471d995566003f5","status":"affected","version":"9f297df20d93411c0b4ddad7f88ba04a7cd36e77","versionType":"git"},{"lessThan":"c3a89e3ec1ccf64fa6a34e391e1581ebbcba8683","status":"affected","version":"e2b76ab8b5c9327ab2dae6…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/affected/0

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/affected/1

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/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:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/metrics/0/cvssV3_1

Source references

7 source assertions

{"url":"https://git.kernel.org/stable/c/0e55f63dd08f09651d39e1b709a91705a8a0ddcb"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/6

{"url":"https://git.kernel.org/stable/c/4cb537ae4f37d7d0f617815ed4bed7173fb50861"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/5

{"url":"https://git.kernel.org/stable/c/6aef1765d6807e0f027cd87f6ac973eb0879a46d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/70b4c414889492c522b6e4331562360f49be2361"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/80824c7e527b70cf9039534e60aff592e8f209d1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/9a7166f0ef8cbb7bb48dd05e2471d995566003f5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/c3a89e3ec1ccf64fa6a34e391e1581ebbcba8683"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:74fac94efd40913304526fb5c48adaa6b810e4f213b98c0859986697b57e2a24 · sha256:04c2aa376ba480dd… · /containers/cna/references/2

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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