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CVE-2022-3543

21
FAUCET Score

CVE-2022-3543 is a memory leak vulnerability in the Linux Kernel, specifically within the unix_sock_destructor/unix_release_sock function of the net/unix/af_unix.c file, affecting the BPF component. Rated Medium with a CVSS score of 5.5, this local vulnerability requires low privileges and can lead to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

3.5LOW

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.1
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.6%
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 72nd 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

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: 18582-16820Fixed in: 5.10.149.1-1
microsoftpatch availablevia msrc
Product: 18583-16823Fixed in: 5.15.79.1-1
microsoftpatch availablevia msrc
Product: cm1 kernel 5.10.149.1-1 on CBL Mariner 1.0Fixed in: 5.10.149.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.79.1-1 on CBL Mariner 2.0Fixed in: 5.15.79.1-1

Vendor Advisories (2)

microsoft2022-Oct/CVE-2022-3543Moderate

Linux Kernel BPF af_unix.c unix_release_sock memory leak

Oct 11, 2022
redhatCVE-2022-3543Moderate

kernel: A flaw in unix_sock_destructor/unix_release_sock in net/unix/af_unix.c leads to memory leak

Oct 3, 2022

References

git.kernel.org / pub/scm/linux/kernel/git/bpf/bpf-next.git/commit
PatchVendor Advisory
vuldb.com
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