CVE-2021-3493: Linux Kernel Privilege Escalation Vulnerability
The overlayfs stacking file system in Linux kernel does not properly validate the application of file capabilities against user namespaces, which could lead to privilege escalation. Required action: Apply updates per vendor instructions.
· high severity · unattributed attribution
Evidence and provenance
- Original source
- CISA KEV report ↗
- Published
- 2022-10-20T00:00:00Z
- Confidence basis
- No actor match
- Record ID
8df498ddcd4d0cfb24d8
Vulnerabilities
CVE-2021-3493
Use and citation
Verify the original report before making operational decisions. Cite this permanent page together with the original source, publication date, confidence level, and review status.