Riskcovery

CVE-2025-22040

ksmbd: fix session use-after-free in multichannel connection

State
Published
Severity
8.8 High
Published
Apr 16, 2025
Updated
Aug 5, 2026
Reserved
Dec 29, 2024

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix session use-after-free in multichannel connection

There is a race condition between session setup and ksmbd_sessions_deregister. The session can be freed before the connection is added to channel list of session. This patch check reference count of session before freeing it.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCISA-ADP

Weaknesses

Affected Products

ProductVersions
LinuxLinux
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 596407adb9af1ee75fe7c7529607783d31b66e7fAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 3980770cb1470054e6400fd97668665975726737Affected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 9069939d762138e232a6f79e3e1462682ed6a17dAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 94c281721d4ed2d972232414b91d98a6f5bdb16bAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before 7dfbd4c43eed91dd2548a95236908025707a8dfdAffected
  • 0626e6641f6b467447c81dd7678a69c66f7746cf to before fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345dbAffected
LinuxLinux
  • 5.15Affected
  • before 5.15Not affected
  • 6.1.134 through 6.1.*Not affected
  • 6.6.87 through 6.6.*Not affected
  • 6.12.23 through 6.12.*Not affected
  • 6.13.11 through 6.13.*Not affected
  • 6.14.2 through 6.14.*Not affected
  • 6.15 and laterNot affected

References

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