CVE-2022-50843
Unknown Unknown - Not Provided
Use-After-Free Vulnerability in Linux Kernel dm_clone Component

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: dm clone: Fix UAF in clone_dtr() Dm_clone also has the same UAF problem when dm_resume() and dm_destroy() are concurrent. Therefore, cancelling timer again in clone_dtr().
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Meta Information
Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50843
EUVD
EUVD-2022-55855
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux 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 device mapper clone target (dm_clone). It occurs in the clone_dtr() function and also when dm_resume() and dm_destroy() are called concurrently, leading to potential memory corruption or crashes due to accessing freed memory.

Impact Analysis

The vulnerability can lead to system instability, crashes, or potentially allow an attacker to execute arbitrary code or cause denial of service by exploiting the Use-After-Free condition in the kernel's device mapper clone target.

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