CVE-2023-32256

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.

Reserved 2023-05-05 | Published 2025-08-01 | Updated 2025-08-01 | Assigner redhat

Problem types

Race Condition During Access to Alternate Channel

Product status

Default status
unaffected

Any version before 5.15.145
affected

6.0.0 before 6.0.*
affected

6.1.0 before 6.1.29
affected

6.2.0 before 6.2.16
affected

6.3.0 before 6.3.2
affected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Timeline

2025-08-01:	Reported to Red Hat.
2023-05-17:	Made public.

References

access.redhat.com/security/cve/CVE-2023-32256 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2385885 (RHBZ#2385885) issue-tracking

git.kernel.org/...d=abcc506a9a71976a8b4c9bf3ee6efd13229c1e19

www.zerodayinitiative.com/advisories/ZDI-23-704/

cve.org (CVE-2023-32256)

nvd.nist.gov (CVE-2023-32256)

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