CVE-2026-31409
8.8 HIGHIn the Linux kernel, the following vulnerability has been resolved: ksmbd: unset conn->binding on failed binding request When a multich...
Published: 2026-04-06 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 8.8 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product |
|---|---|
| linux | linux_kernel |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-31409
- [Patch]https://git.kernel.org/stable/c/282343cf8a4a5a3603b1cb0e17a7083e4a593b03
- [Patch]https://git.kernel.org/stable/c/6260fc85ed1298a71d24a75d01f8b2e56d489a60
- [Patch]https://git.kernel.org/stable/c/6ebef4a220a1ebe345de899ebb9ae394206fe921
- [Other]https://git.kernel.org/stable/c/7e8b270813079c785696bce8802a3f920665c88c
- [Patch]https://git.kernel.org/stable/c/89afe5e2dbea6e9d8e5f11324149d06fa3a4efca
- [Patch]https://git.kernel.org/stable/c/9feb2d1bf86d9e5e66b8565f37f8d3a7d281a772
- [Patch]https://git.kernel.org/stable/c/d073870dab8f6dadced81d13d273ff0b21cb7f4e
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