CVE-2026-91059
CVE-2026-91059 · JPEG decoder: a duplicate SOF0 after SOS publishes a pixelmap that misreports its own allocation size
This page contains facts from public vulnerability sources. Check the original advisory before updating.
The GUIX JPEG software decoder enforces no ordering on JPEG markers. A file that places a second `SOF0` frame header after `SOS` re-runs the frame header parser after the output buffer has already been allocated and its geometry latched. The decoder returns `GX_SUCCESS` and publishes a `GX_PIXELMAP` whose reported dimensions and `data_size` exceed the allocation behind it. Any consumer that trusts the returned structure reads out of bounds, including GUIX's own display drivers, reached through the ordinary draw path. Reproduces in the shipped default configuration; `GX_SOFTWARE_DECODER_SUPPORT` is enabled by default.
CVSS 6.8 · Medium · EPSS 0.2%
- Published
- Updated
Affected products and versions
eclipse threadx - guix
- Versions
- ≥ 0, ≤ 6.5.1.202602a: Affected (semver)
- 6.5.2.202603: Not affected
No fix published