CVEvulnerability
CVE-2021-20321
4.7 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-02-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.7 MEDIUM — AV:L/AC:M/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-362
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.
Affected configurations
• linux linux kernel (< 5.15)
• linux linux kernel 5.15
• redhat enterprise linux 7.0
• redhat enterprise linux 8.0
• debian debian linux 9.0
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2013242 Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List, Third Party Advisory
- https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/ lore.kernel.org
- https://www.debian.org/security/2022/dsa-5096 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2013242 Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List, Third Party Advisory
- https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/ lore.kernel.org
- https://www.debian.org/security/2022/dsa-5096 Third Party Advisory