CVE-2026-31409
ksmbd: unset conn->binding on failed binding request
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.15
References 7
git.kernel.org
- stable/c/7e8b270813079c785696bce8802a3f920665c88c
- stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e
- stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921
- stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efca
- stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772
- stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60
- stable/c/282343cf8a4a5a3603b1cb0e17a7083e4a593b03