vulnerability
Debian: CVE-2021-21781: linux -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Jul 22, 2021 | Jul 22, 2021 | Aug 15, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Jul 22, 2021
Added
Jul 22, 2021
Modified
Aug 15, 2025
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
Solution
debian-upgrade-linux
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