CVE-2026-31409 — Detection of Error Condition Without Action in Linux
Severity
7.8HIGH
No vectorEPSS
0.0%
top 97.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 6
Description
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.
Affected Packages3 packages
▶CVEListV5linux/linuxf5a544e3bab78142207e0242d22442db85ba1eff — d073870dab8f6dadced81d13d273ff0b21cb7f4e+6
🔴Vulnerability Details
2GHSA▶
GHSA-5qj3-gjq7-62fm: In the Linux kernel, the following vulnerability has been resolved:
ksmbd: unset conn->binding on failed binding request
When a multichannel SMB2_SE↗2026-04-06
OSV▶
CVE-2026-31409: In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn->binding on failed binding request When a multichannel SMB2_SESS↗2026-04-06