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CVE-2022-49422

17
FAUCET Score

CVE-2022-49422 is a memory leak vulnerability in the Linux kernel's dmaengine IDXD driver, specifically within the idxd_cdev_register() function. This flaw occurs when alloc_chrdev_region() fails, leading to unreleased resources. Rated 5.5 MEDIUM, it requires local access and low privileges (AV:L/PR:L) to cause a high impact on availability (A:H) by consuming system resources. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.6, < 5.10.121CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.46CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.17.14CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.18, < 5.18.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 71st 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-2022-49422Low

kernel: dmaengine: idxd: Fix the error handling path in idxd_cdev_register()

Feb 26, 2025

References

git.kernel.org / stable/c/5e88561eceb34ae3f88451c2b8e30fe403484189
Patch
git.kernel.org / stable/c/6073af78156b8c3fc1198f8bcc190b7ac3ac0143
Patch
git.kernel.org / stable/c/aab08c1aac01097815fbcf10fce7021d2396a31f
Patch
git.kernel.org / stable/c/b3c7b5d08e9d5b2ff31c03078c00ecf11042419f
Patch
git.kernel.org / stable/c/c308a2e711a52a47f4b45e7add2b5200169e429a
Patch