CVE-2026-92454
Awaiting Analysis Awaiting Analysis - Queue

GUIX JPEG Decoder Buffer Overflow and Infinite Loop

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Eclipse Foundation

Description
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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-11-09
AI Q&A
2026-10-20
EPSS Evaluated
2026-11-08
NVD
CVE-2026-92454
EUVD
EUVD-2026-105046

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Eclipse Foundation Eclipse ThreadX - GUIX 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-835 The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

The GUIX JPEG decoder has two flaws. First, it reads marker segments without checking their length, causing out-of-bounds reads past the image buffer. Second, a zero chroma sampling factor leads to an infinite loop during decoding. Both issues occur when the software decoder is enabled by default.

Detection Guidance

Detecting this vulnerability requires checking the GUIX software version. Use commands like 'guix --version' or inspect the library files for GUIX components. If the version is 6.5.1.202602a or earlier, the system is vulnerable.

Impact Analysis

The out-of-bounds reads may corrupt image state variables, causing crashes or limited heap influence. The infinite loop freezes the GUI thread, leading to a denial of service until a watchdog resets the device. This affects availability and stability of systems using GUIX.

Compliance Impact

This vulnerability primarily causes out-of-bounds reads and infinite loops in the GUIX JPEG decoder, leading to crashes or denial of service. It does not directly expose or leak sensitive data, but crashes could disrupt system availability. Compliance impact depends on system role: availability issues may affect HIPAA for medical systems or GDPR for services requiring uptime. No evidence suggests data confidentiality breaches.

Mitigation Strategies

Upgrade GUIX to version 6.5.2.202603 or later. Alternatively, disable the software decoder in GUIX settings or only decode trusted images to prevent exploitation.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-92454. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...