CVE-2021-20321 | BDVDB-2026-170261 Detail

kernel

Description#

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system.

Impact#

No impact statement in the source data.

Weaknesses#

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

References#

https://bugzilla.redhat.com/show_bug.cgi?id=2013242
https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
https://www.debian.org/security/2022/dsa-5096

Exploit#

No public exploit known

History#

Version 12022-02-18Record published in the CVE List.
Version 22024-08-03Most recent update recorded in the CVE List.