CVE Explorer

CVE-2026-53198

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL A deferred byte-range lock (an SMB2_LOCK that blocks) registers an async work on conn->async_requests via setup_async_work(), with cancel_fn = smb2_remove_blocked_lock and cancel_argv[0] pointing at the struct file_lock. When the request is cancelled, the worker frees the file_lock with locks_free_lock() and takes the cancelled early-exit, which "goto out

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fa42afe574ecf4a6994acc8be31a350f11c1d73cab155d600e7b14212a7c1979

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/smb2pdu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b7063c7426ea5a4d15e01b60538718765392f49d","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"0da2e073f9cbf4985a0fd9acb71bc5ff599f8afd","status":"affected","version":"e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9","versionType":"git"},{"lessThan":"89ae9df09d2c1fb4a4eb495c113a7ce1dca34147","status":"affected","version":"e2f34481b24db2fd634b5e…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/affected/0

{"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":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","versionType":"semver"},{"lessThan…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/affected/1

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:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/metrics/0/cvssV3_1

Source references

6 source assertions

{"url":"https://git.kernel.org/stable/c/0da2e073f9cbf4985a0fd9acb71bc5ff599f8afd"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/14d2eee0193ac3cd1bf3d014373449f0b8d35d6d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/2b2eda2821cff1d1b5a423b6ee7d8fc6fbc8e694"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/89ae9df09d2c1fb4a4eb495c113a7ce1dca34147"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/2

{"url":"https://git.kernel.org/stable/c/b7063c7426ea5a4d15e01b60538718765392f49d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/f580d27e8928828693df44ba2db0fffdbe11dfea"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:418bf9298315b8405c5ad509677b582c11f916ffc1b06b79aa53af3c7cdd917a · sha256:5d4d27ede6b6a468… · /containers/cna/references/5

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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