ksmbd: fix session use-after-free in multichannel connection
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.7%
exploitation probability
0.7%top 52% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7fhttps://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfdhttps://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17dhttps://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16bhttps://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345dbhttps://lists.debian.org/debian-lts-announce/2025/05/msg00045.html