ksmbd: Fix refcount leak when invalid session is found on session lookup
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Fix refcount leak when invalid session is found on session lookup
When a session is found but its state is not SMB2_SESSION_VALID, It
indicates that no valid session was found, but it is missing to decrement
the reference count acquired by the session lookup, which results in
a reference count leak. This patch fixes the issue by explicitly calling
ksmbd_user_session_put to release the reference to the session.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efchttps://git.kernel.org/stable/c/11fe566b442e3bc2774191740fd377739a87a1c0https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd