CVE-2025-22921 Null dereference in n/a

What is CVE-2025-22921?

CVE-2025-22921 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Feb 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

FFmpeg git-master,N-113007-g8d24a28d06 was discovered to contain a segmentation violation via the component /libavcodec/jpeg2000dec.c.

Weakness: CWE-476

Which versions are affected by CVE-2025-22921?

It affects 2 products.

Products include Debian Debian Linux, Ffmpeg Ffmpeg.

How do I fix CVE-2025-22921?

Apply the vendor's patch.

Is CVE-2025-22921 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-22921 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 DEBIAN-CVE-2025-22921, ECHO-196f-77dc-a314, GHSA-j3v4-v6h2-f4pp, JLSEC-2026-643, MINI-2cx9-gf8q-4r86, OESA-2025-2027 and 4 more.