Description
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
Problem types
Race Condition During Access to Alternate Channel
Product status
Any version before 5.15.145
6.0.0 (semvar) before 6.0.*
6.1.0 (semvar) before 6.1.29
6.2.0 (semvar) before 6.2.16
6.3.0 (semvar) before 6.3.2
Timeline
| 2025-08-01: | Reported to Red Hat. |
| 2023-05-17: | Made public. |
References
access.redhat.com/security/cve/CVE-2023-32256
bugzilla.redhat.com/show_bug.cgi?id=2385885 (RHBZ#2385885)
git.kernel.org/...d=abcc506a9a71976a8b4c9bf3ee6efd13229c1e19
www.zerodayinitiative.com/advisories/ZDI-23-704/