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CVE-2022-49362

21
FAUCET Score

CVE-2022-49362 is a high-severity use-after-free vulnerability in the Linux kernel's NFSD component. This flaw allows a local attacker with low privileges to achieve high impact on confidentiality, integrity, and availability. While no active exploitation or public exploit code has been identified, and community discussion is minimal, the vulnerability has a CVSS score of 7.8 and a FAUCET Risk Score of 74/100, indicating a significant potential risk. Organizations running affected Linux kernel versions should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.18, < 5.18.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*

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
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.9%
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 53rd 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 (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch

Vendor Advisories (1)

redhatCVE-2022-49362Important

kernel: NFSD: Fix potential use-after-free in nfsd_file_put()

Feb 26, 2025

References

git.kernel.org / stable/c/261eabe19cb28e4a8587a4442d257b543d7c2d57
Patch
git.kernel.org / stable/c/333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57
Patch
git.kernel.org / stable/c/ada1757b259f353cade47037ee0a0249b4cddad3
Patch
git.kernel.org / stable/c/b6c71c66b0ad8f2b59d9bc08c7a5079b110bec01
Patch