CVE-2025-39720 (GCVE-0-2025-39720)

Vulnerability from cvelistv5 – Published: 2025-09-05 17:21 – Updated: 2026-05-11 21:34
VLAI
Title
ksmbd: fix refcount leak causing resource not released
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix refcount leak causing resource not released When ksmbd_conn_releasing(opinfo->conn) returns true,the refcount was not decremented properly, causing a refcount leak that prevents the count from reaching zero and the memory from being released.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < a1d2bab4d53368a526c97aba92671dd71814f95a (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 36e010bb865fbaa1202fe9bcce3fd486d6db7606 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 9a7abce6e8c0e2145b346a6d4abf0d9655e9b0e8 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 89bb430f621124af39bb31763c4a8b504c9651e2 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.6.103 , ≤ 6.6.* (semver)
Unaffected: 6.12.44 , ≤ 6.12.* (semver)
Unaffected: 6.16.4 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
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}



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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.