VDB
DEBIAN-CVE-2021-3493
DEBIAN-CVE-2021-3493
PUBLISHED
CVSS 7.800000190734863 HIGH
The overlayfs implementation in the linux kernel did not properly validate with respect to user namespaces the setting of file capabilities on files in an underlying file system. Due to the combination of unprivileged user namespaces along with a patch carried in the Ubuntu kernel to allow unprivileged overlay mounts, an attacker could use this to gain elevated privileges.
Risk Scores
CVSS 3.1
7.800000190734863
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | linux | 0, 0, 0 |
| Debian:12 | linux | 0, 0, 0 |
| Debian:13 | linux | 0, 0, 0 |
| Debian:11 | linux | 0, 0, 0 |
Timeline
- Apr 17, 2021 CVE Published
- Feb 13, 2025 PoC Published
- Apr 28, 2026 CVE Updated