CVE-2022-33981 Use after free in n/a

What is CVE-2022-33981?

CVE-2022-33981 is a low-severity use after free vulnerability in Debian Debian Linux, published on 18 Jun 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

drivers/block/floppy.c in the Linux kernel before 5.17.6 is vulnerable to a denial of service, because of a concurrency use-after-free flaw after deallocating raw_cmd in the raw_cmd_ioctl function.

Weakness: CWE-416

Which versions are affected by CVE-2022-33981?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2022-33981?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2022-33981 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-33981 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-9952, CVE-2022-1836, DEBIAN-CVE-2022-33981, GHSA-f8p8-qq4c-94wg, UBUNTU-CVE-2022-33981.