CVE Explorer

CVE-2026-31444

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free and NULL deref in smb_grant_oplock() smb_grant_oplock() has two issues in the oplock publication sequence: 1) opinfo is linked into ci->m_op_list (via opinfo_add) before add_lease_global_list() is called. If add_lease_global_list() fails (kmalloc returns NULL), the error path frees the opinfo via __free_opinfo() while it is still linked in ci->m_op_list. Concurrent m_op_list readers (opi

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:4c36864f63a36495062e3b8fcbe29439598f0b21ff518d1ef6a9aaebb2b3fd0d

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/oplock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9e785f004cbc56390479b77375726ea9b0d1a8a6","status":"affected","version":"302fef75512b2c8329a3f5efab1ae7ba2562387a","versionType":"git"},{"lessThan":"7de55bba69cbf0f9280daaea385daf08bc076121","status":"affected","version":"08aa9f3c8cf4d0bee44df540dfe34e8d64069f2c","versionType":"git"},{"lessThan":"a5c6f6d6ceefed2d5210ee420fb75f8362461f46","status":"affected","version":"1d6abf145615dbfe267ce3b…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/oplock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6.6.131","status":"affected","version":"6.6.130","versionType":"semver"},{"lessThan":"6.12.80","status":"affected","version":"6.12.78","versionType":"semver"},{"lessThan":"6.18.21","status":"affected","version":"6.18.19","versionType":"semver"},{"lessThan":"6.19.11","status":"affected","version":"6.19.9","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/smb/server/oplock.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6.6.131","status":"affected","version":"6.6.130","versionType":"semver"},{"lessThan":"6.12.80","status":"affected","version":"6.12.78","versionType":"semver"},{"lessThan":"6.18.21","status":"affected","version":"6.18.19","versionType":"semver"},{"lessThan":"6.19.11","status":"affected","version":"6.19.9","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/affected/1

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:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions

{"url":"https://git.kernel.org/stable/c/48623ec358c1c600fa1e38368746f933e0f1a617"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/6d7e5a918c1d0aad06db0e17677b66fc9a471021"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/7de55bba69cbf0f9280daaea385daf08bc076121"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/9e785f004cbc56390479b77375726ea9b0d1a8a6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/a5c6f6d6ceefed2d5210ee420fb75f8362461f46"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:c2286aac053971c5acf9fddce5afc58952f26a6aa2004043a06a2d1424aa263d · sha256:e224af41b83986e0… · /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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