CVE-2021-21781
- State
- Published
- Severity
- 4.0 Medium
- Published
- Aug 18, 2021
- Updated
- Aug 3, 2024
- Reserved
- Jan 4, 2021
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 4.0 Medium | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | talos |
Weaknesses
- CWE-908 Use of Uninitialized Resource
Affected Products
| Product | Versions |
|---|---|
Linux Kerneln/a |
|
References
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