ksmbd: unset conn->binding on failed binding request
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.5%
exploitation probability
0.5%top 63% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: unset conn->binding on failed binding request
When a multichannel SMB2_SESSION_SETUP request with
SMB2_SESSION_REQ_FLAG_BINDING fails ksmbd sets conn->binding = true
but never clears it on the error path. This leaves the connection in
a binding state where all subsequent ksmbd_session_lookup_all() calls
fall back to the global sessions table. This fix it by clearing
conn->binding = false in the error path.
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/282343cf8a4a5a3603b1cb0e17a7083e4a593b03https://git.kernel.org/stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60https://git.kernel.org/stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921https://git.kernel.org/stable/c/7e8b270813079c785696bce8802a3f920665c88chttps://git.kernel.org/stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efcahttps://git.kernel.org/stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772https://git.kernel.org/stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e