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CVE-2022-50496

24
FAUCET Score

CVE-2022-50496 is a Use-After-Free (UAF) vulnerability in the Linux kernel's device mapper cache (dm_cache) component, specifically occurring when dm_resume() and dm_destroy() operations are concurrent. Rated 7.8 HIGH, this flaw allows a local, low-privileged attacker to achieve high confidentiality, integrity, and availability impacts with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.9, < 4.9.337CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.10, < 4.14.303CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.270CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.229CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.163CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.16%
Probability of exploitation in next 30 days
EPSS Percentile
5.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0016 is in the 23rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-477.10.1.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50496Moderate

kernel: dm cache: Fix UAF in destroy()

Oct 4, 2025

References

git.kernel.org / stable/c/034cbc8d3b47a56acd89453c29632a9c117de09d
Patch
git.kernel.org / stable/c/2b17026685a270b2beaf1cdd9857fcedd3505c7e
Patch
git.kernel.org / stable/c/2f097dfac7579fd84ff98eb1d3acd41d53a485f3
Patch
git.kernel.org / stable/c/4d20032dd90664de09f2902a7ea49ae2f7771746
Patch
git.kernel.org / stable/c/6a3e412c2ab131c54945327a7676b006f000a209
Patch
git.kernel.org / stable/c/6a459d8edbdbe7b24db42a5a9f21e6aa9e00c2aa
Patch
git.kernel.org / stable/c/6ac4f36910764cb510bafc4c3768544f86ca48ca
Patch
git.kernel.org / stable/c/993406104d2b28fe470126a062ad37a1e21e792e
Patch
git.kernel.org / stable/c/d2a0b298ebf83ab6236f66788a3541e91ce75a70
Patch