CVE-2022-50496
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-04

Last updated on: 2025-10-06

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: dm cache: Fix UAF in destroy() Dm_cache also has the same UAF problem when dm_resume() and dm_destroy() are concurrent. Therefore, cancelling timer again in destroy().
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Meta Information
Published
2025-10-04
Last Modified
2025-10-06
Generated
2026-06-16
AI Q&A
2025-10-04
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50496
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a Use-After-Free (UAF) issue in the Linux kernel's dm_cache component. It occurs when dm_resume() and dm_destroy() functions run concurrently, leading to a situation where memory is accessed after it has been freed. The fix involves cancelling a timer again in the destroy() function to prevent this problem.

Impact Analysis

The vulnerability could potentially lead to system instability or crashes due to accessing freed memory. It might also be exploitable to cause unintended behavior or escalate privileges, depending on the context in which dm_cache is used.

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