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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-49640 Detail

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.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/2d3b559df3ed39258737789aae2ae7973d205bc1 Patch 
https://git.kernel.org/stable/c/40e0477a7371d101c55b69d9c32a7a1ed82ab5ea Patch 
https://git.kernel.org/stable/c/b60eddf98b9716651069dfda296c91311a7a6293 Patch 
https://git.kernel.org/stable/c/e3a2144b3b6bf9ecafd91087c8b8b48171ec19df Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-49640
NVD Published Date:
02/26/2025
NVD Last Modified:
03/11/2025
Source:
kernel.org