CVE-2023-25221 Memory corruption in n/a

What is CVE-2023-25221?

CVE-2023-25221 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 1 Mar 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Libde265 v1.0.10 was discovered to contain a heap-buffer-overflow vulnerability in the derive_spatial_luma_vector_prediction function in motion.cc.

Weakness: CWE-787

Which versions are affected by CVE-2023-25221?

It affects 2 products.

Products include Debian Debian Linux, Struktur Libde265.

How do I fix CVE-2023-25221?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-25221 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-25221 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-2023-25221, GHSA-xj8q-rwwx-7r65, UBUNTU-CVE-2023-25221.