CVEvulnerability

CVE-2021-21781

3.3 LOW Published 2021-08-18 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.3 LOW — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS 3.0 ([email protected])
4.0 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-908

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

Affected configurations

• linux linux kernel 5.4.54 • linux linux kernel 5.4.66 • oracle communications cloud native core binding support function 22.1.3 • oracle communications cloud native core network exposure function 22.1.1 • oracle communications cloud native core policy 22.2.0

Related

Weakness · CWE (1)

  • CWE-908 Use of Uninitialized Resource weakness

References