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CVE-2021-21781

Updated: 2022-05-28 06:47:49.453575

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


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x LOW 2.1
CVSS Version 3.x LOW 3.3

Status

OS name Project name Version Status Errata Last updated
CentOS 8.4 ELS kernel 4.18.0-305.25.1 Needs triage 2022-05-10 16:04:48.071576
CentOS 8.5 ELS kernel 4.18.0-348.7.1 Needs triage 2022-05-10 16:04:46.983756