linux: In the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn->binding on failed binding req...
CVE-2026-31409 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-31409, released April 6, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.170-1 | DEBIAN-CVE-2026-31409 | Apr 6, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.85-1 | DEBIAN-CVE-2026-31409 | Apr 6, 2026 |
| linux · Debian 14 | 6.19.10-1 | DEBIAN-CVE-2026-31409 | Apr 6, 2026 |
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