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CVE-2022-28356

21
FAUCET Score

CVE-2022-28356 is a refcount leak vulnerability in the Linux kernel, specifically affecting versions prior to 5.17.1, within the net/llc/af_llc.c component. This medium-severity vulnerability (CVSS 5.5) can lead to a denial of service (DoS) with local access and low attack complexity. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.17.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 94th 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 (5)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 18454-16820Fixed in: -
microsoftpatch availablevia msrc
Product: 18720-16823Fixed in: 5.15.37.1-2
microsoftpatch availablevia msrc
Product: cm1 kernel 5.10.111.1-1 on CBL Mariner 1.0Fixed in: -
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.37.1-2 on CBL Mariner 2.0Fixed in: 5.15.37.1-2

Vendor Advisories (2)

microsoft2022-Apr/CVE-2022-28356Moderate

In the Linux kernel before 5.17.1 a refcount leak bug was found in net/llc/af_llc.c.

Apr 12, 2022
redhatCVE-2022-28356Moderate

kernel: refcount leak in llc_ui_bind and llc_ui_autobind

Apr 2, 2022

References

cdn.kernel.org / pub/linux/kernel/v5.x/ChangeLog-5.17.1
PatchRelease NotesVendor Advisory
github.com / torvalds/linux/commit/764f4eb6846f5475f1244767d24d25dd86528a4a
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2022/07/msg00000.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20220506-0006
Third Party Advisory
debian.org / security/2022/dsa-5127
Third Party Advisory
debian.org / security/2022/dsa-5173
Third Party Advisory
openwall.com / lists/oss-security/2022/04/06/1
ExploitMailing ListThird Party Advisory