This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-96611 →

UBUNTU-CVE-2026-96611

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box ar...

Original description

The description as published by the source.

FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.

Source: OSV.dev (Open Source Vulnerabilities) OSV