CVE-2022-3303 Race condition in Linux kernel

What is CVE-2022-3303?

CVE-2022-3303 is a medium-severity vulnerability in Debian Debian Linux, published on 27 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or member of the audio group) could use this flaw to crash the system, resulting in a denial of service condition

Weakness: CWE-362, CWE-667

Which versions are affected by CVE-2022-3303?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-3303?

Apply the vendor's patch.

Is CVE-2022-3303 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3303 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-11048, DEBIAN-CVE-2022-3303, GHSA-833h-m63r-586v, UBUNTU-CVE-2022-3303.