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CVE-2022-49640

15
FAUCET Score

CVE-2022-49640 is a data race vulnerability in the Linux kernel's sysctl subsystem, specifically within the proc_douintvec_minmax() function. This flaw, affecting Linux kernel versions, could lead to denial of service due to concurrent access issues. Rated Medium severity (CVSS 4.7), it requires local access with low privileges and high attack complexity, potentially causing high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.13, < 5.10.132CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.56CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 5.18.13CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
5.19CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
7.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 38th percentile among its peer group of 1,297 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 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 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2022-49640Low

kernel: sysctl: Fix data races in proc_douintvec_minmax().

Feb 26, 2025

References

git.kernel.org / stable/c/2d3b559df3ed39258737789aae2ae7973d205bc1
Patch
git.kernel.org / stable/c/40e0477a7371d101c55b69d9c32a7a1ed82ab5ea
Patch
git.kernel.org / stable/c/b60eddf98b9716651069dfda296c91311a7a6293
Patch
git.kernel.org / stable/c/e3a2144b3b6bf9ecafd91087c8b8b48171ec19df
Patch