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().

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-04

Last Modified

2025-10-06

Generated

2026-07-06

AI Q&A

2025-10-04

EPSS Evaluated

2026-07-05

NVD

CVE-2022-50496

Affected Vendors & Products

Vendor	Product	Version / Range
linux	kernel	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

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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