CVE-2023-32256
Kernel: ksmbd race issue from smb2 close and logoff with multichannel
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-421 |
| Published | Aug 1, 2025 |
| Last Updated | Nov 20, 2025 |
Stay Ahead of the Next One
Get instant alerts for
Be the first to know when new high vulnerabilities are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 10
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-32256 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2385885 git.kernel.org: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=abcc506a9a71976a8b4c9bf3ee6efd13229c1e19 zerodayinitiative.com: https://www.zerodayinitiative.com/advisories/ZDI-23-704/