CVE-2022-42329 Denial of service in Linux

What is CVE-2022-42329?

CVE-2022-42329 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 7 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] The patch for XSA-392 introduced another issue which might result in a deadlock when trying to free the SKB of a packet dropped due to the XSA-392 handling (CVE-2022-42328). Additionally when dropping packages for other reasons the same deadlock could occur in case of netpoll being active for the interface the xen-netback driver is connected to (CVE-2022-42329).

Weakness: CWE-667

Which versions are affected by CVE-2022-42329?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-42329?

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-2022-42329 being exploited?

There is no known exploitation of CVE-2022-42329 in the wild and no public exploit code.

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-11584, DEBIAN-CVE-2022-42329, GHSA-ghhc-93hq-6rqv, OESA-2023-1014, UBUNTU-CVE-2022-42329.