USN-8469-1: FFmpeg vulnerabilities

Jiasheng Jiang discovered that FFmpeg incorrectly handled memory in
certain error-handling paths of its TensorFlow DNN backend. An attacker
could possibly use this issue to cause a denial of service. This issue only
affected Ubuntu 24.04 LTS. (CVE-2025-12343)

Quang Luong discovered that FFmpeg incorrectly handled certain subsample
data. An attacker could possibly use this issue to cause a denial of
service or possibly execute arbitrary code. (CVE-2026-40962)