CVE-2022-28356 Denial of service in n/a

What is CVE-2022-28356?

CVE-2022-28356 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 2 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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

Which versions are affected by CVE-2022-28356?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-28356?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-28356 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-28356 exists.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-9292, DEBIAN-CVE-2022-28356, GHSA-x652-hrc4-qr9w, UBUNTU-CVE-2022-28356.