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CVE-2022-49640

MEDIUM CVSS: 4.7 Published: 2025-02-26 Modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec_minmax(). 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_minmax() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec_minmax() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.

Affected Platforms

Linux Linux Kernel

Weakness Type

CWE-362, CWE-362

References