medium4.7
CVE-2021-20321
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.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | before 5.15 Version 5.15 |
| Redhat | Enterprise Linux | Versions 7.0, 8.0 |
| Debian | Debian Linux | Versions 9.0, 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.redhat.com/show_bug.cgi?id=2013242
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/
- https://www.debian.org/security/2022/dsa-5096
- https://bugzilla.redhat.com/show_bug.cgi?id=2013242
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://lore.kernel.org/all/20211011134508.748956131%40linuxfoundation.org/
- https://www.debian.org/security/2022/dsa-5096