VDB
DEBIAN-CVE-2021-21781
DEBIAN-CVE-2021-21781
PUBLISHED
CVSS 3.299999952316284 LOW
An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66 and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process’s memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222 4.19.177 5.4.99 5.10.17 5.11
Risk Scores
CVSS v3.1
3.299999952316284
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | linux | 0, 0, 0 |
| Debian:11 | linux | 0, 0, 0 |
| Debian:14 | linux | 0, 0, 0 |
| Debian:13 | linux | 0, 0, 0 |
Timeline
- Aug 18, 2021 CVE Published
- Apr 28, 2026 CVE Updated