Vulnerability in Linux
CVE-2023-32246
In the Linux kernel, the following vulnerability has been resolved: ksmbd: call rcu_barrier() in ksmbd_server_exit() racy issue is triggered the bug by racing between closing a connection and rmmod. In ksmbd, rcu_barrier() is not called at module unload time, so nothing prevents ksmbd from getting unloaded while it still has RCU callbacks pending. It leads to trigger unintended execution of kernel code locally and use to defeat protections such as Kernel Lockdown
EPSS: 0.002 (6.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux — versions 6.3.2, 0626e6641f6b467447c81dd7678a69c66f7746cf, 6.4
- Linux Linux_kernel
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-32246?
- CVE-2023-32246 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-08-16.
- How severe is CVE-2023-32246?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2023-32246 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.