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CVE-2022-49893

17
FAUCET Score

CVE-2022-49893 is a memory leak vulnerability in the Linux kernel's CXL region management, specifically affecting the handling of region objects when targets are not properly detached during deletion. This flaw can lead to a denial of service (DoS) due to resource exhaustion. With a CVSS score of 5.5 (MEDIUM), it requires local access and low privileges to exploit, with no user interaction needed. There is currently no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0, < 6.0.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 28th percentile among its peer group of 15,940 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-49893Moderate

kernel: cxl/region: Fix cxl_region leak, cleanup targets at region delete

May 1, 2025

References

git.kernel.org / stable/c/0d9e734018d70cecf79e2e4c6082167160a0f13f
Patch
git.kernel.org / stable/c/45d9fb4b758b9d602ee7776eb6754b0349946aad
Patch