CVE-2025-21945 (GCVE-0-2025-21945)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:41 – Updated: 2026-05-11 21:09
VLAI
Title
ksmbd: fix use-after-free in smb2_lock
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 410ce35a2ed6d0e114132bba29af49b69880c8c7 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 8573571060ca466cbef2c6f03306b2cc7b883506 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < a0609097fd10d618aed4864038393dd75131289e (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 636e021646cf9b52ddfea7c809b018e91f2188cb (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 84d2d1641b71dec326e8736a749b7ee76a9599fc (git)
Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.131 , ≤ 6.1.* (semver)
Unaffected: 6.6.83 , ≤ 6.6.* (semver)
Unaffected: 6.12.19 , ≤ 6.12.* (semver)
Unaffected: 6.13.7 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.