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CVE-2022-50496
dm cache: Fix UAF in destroy()
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().

INFO

Published Date :

Oct. 4, 2025, 4:15 p.m.

Last Modified :

Oct. 6, 2025, 2:56 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2022-50496 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Resolve use-after-free in destroy() and concurrent resume/destroy operations.
  • Apply the Linux kernel patch for dm cache.
  • Ensure timers are cancelled correctly in destroy().
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-50496.

URL Resource
https://git.kernel.org/stable/c/034cbc8d3b47a56acd89453c29632a9c117de09d
https://git.kernel.org/stable/c/2b17026685a270b2beaf1cdd9857fcedd3505c7e
https://git.kernel.org/stable/c/2f097dfac7579fd84ff98eb1d3acd41d53a485f3
https://git.kernel.org/stable/c/4d20032dd90664de09f2902a7ea49ae2f7771746
https://git.kernel.org/stable/c/6a3e412c2ab131c54945327a7676b006f000a209
https://git.kernel.org/stable/c/6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa
https://git.kernel.org/stable/c/6ac4f36910764cb510bafc4c3768544f86ca48ca
https://git.kernel.org/stable/c/993406104d2b28fe470126a062ad37a1e21e792e
https://git.kernel.org/stable/c/d2a0b298ebf83ab6236f66788a3541e91ce75a70
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-50496 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2022-50496 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-50496 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-50496 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 04, 2025

    Action Type Old Value New Value
    Added 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().
    Added Reference https://git.kernel.org/stable/c/034cbc8d3b47a56acd89453c29632a9c117de09d
    Added Reference https://git.kernel.org/stable/c/2b17026685a270b2beaf1cdd9857fcedd3505c7e
    Added Reference https://git.kernel.org/stable/c/2f097dfac7579fd84ff98eb1d3acd41d53a485f3
    Added Reference https://git.kernel.org/stable/c/4d20032dd90664de09f2902a7ea49ae2f7771746
    Added Reference https://git.kernel.org/stable/c/6a3e412c2ab131c54945327a7676b006f000a209
    Added Reference https://git.kernel.org/stable/c/6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa
    Added Reference https://git.kernel.org/stable/c/6ac4f36910764cb510bafc4c3768544f86ca48ca
    Added Reference https://git.kernel.org/stable/c/993406104d2b28fe470126a062ad37a1e21e792e
    Added Reference https://git.kernel.org/stable/c/d2a0b298ebf83ab6236f66788a3541e91ce75a70
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.