CVE-2026-92454CWE-125CWE-835
CVE-2026-92454
Medium · published October 20, 2026
What it is
The GUIX software JPEG decoder reads four kinds of marker segment without checking that each is long enough to hold what it reads. A truncated segment is therefore read past the end of the caller's image buffer. Separately, a zero chroma sampling factor makes the block decode loop non-terminating. Both reproduce in the default configuration, in which `GX_SOFTWARE_DECODER_SUPPORT` is enabled.
The record
Technical detail
- CVSS v3.1
- 6.1 · MEDIUM
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
- CVSS v4.0
- 6.8 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
- EPSS
- 0.00151 · 3.9th percentile
- Weaknesses
- CWE-125 · Out-of-bounds Read; CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
- Published
- 2026-10-20T19:17Z
References (1)
EPSS history
Timeline
22 OCT 03:36Z
EPSS moved — → 0%
epss
20 OCT 14:58Z
JPEG decoder: truncated segments are read past the image buffer, and a zero sampling factor hangs the decode
cvelistv5
20 OCT 14:58Z
JPEG decoder: truncated segments are read past the image buffer, and a zero sampling factor hangs the decode
cvelistv5