CVE-2022-36946 Denial of service in n/a

What is CVE-2022-36946?

CVE-2022-36946 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 27 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.

Which versions are affected by CVE-2022-36946?

It affects 7 products.

Products include Debian Debian Linux, Linux kernel, Netapp Active Iq Unified Manager, Netapp Hci Compute Node, Netapp Solidfire \& Hci Management Node, Netapp Solidfire \& Hci Storage Node and 1 more.

How do I fix CVE-2022-36946?

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-2022-36946 being exploited?

There is no known exploitation of CVE-2022-36946 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

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-10440, DEBIAN-CVE-2022-36946, GHSA-m6jf-p94r-8589, UBUNTU-CVE-2022-36946, USN-5590-1, USN-5634-1.