CVE-2023-54128

A race condition was found in the Linux kernel's filesystem mount namespace handling. When cleaning up peer group IDs in an error path, the code fails to hold the namespace lock. This allows another thread to concurrently change a mount from shared to non-shared, potentially causing inconsistent mount propagation state or other undefined behavior.

This flaw requires concurrent mount namespace operations to trigger the race condition. While the impact could include inconsistent mount propagation behavior, practical exploitation requires specific timing during mount failure cleanup. The affected code path is in error handling during mount operations.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.