CVE-2026-91059GHSA-cxf2-pgvg-pcw3
Eclipse ThreadX - GUIX: JPEG decoder: a duplicate SOF0 after SOS publishes a pixelmap that misreports its own allocation size
Eclipse Foundation Eclipse ThreadX - GUIX
CVSS
6.8MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.16%Chance of exploitation activity in the next 30 days, higher than 4% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 2
- Eclipse ThreadX - GUIXaffected: all versions through 6.5.1.202602aCVE List
- Eclipse ThreadX - GUIXunaffected: 6.5.2.202603CVE List