CVE-2022-49641

MEDIUM EPSS 5.9%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
4.7 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.

CVSS Details

Base Score
4.7
Exploitability
1.0
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-362

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥4.4.24  –  <4.5
linuxlinux_kernel*≥4.7.7  –  <5.10.132
linuxlinux_kernel*≥5.11  –  <5.15.56
linuxlinux_kernel*≥5.16  –  <5.18.13
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any
linuxlinux_kernel5.19any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d5d54714e329f646bd7af4994fc427d88ee68936
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d5d54714e329f646bd7af4994fc427d88ee68936
    Patch