Bug 2569129 (CVE-2026-125703)

Summary: CVE-2026-125703 gst-plugins-bad: gst-plugins-bad: Bounds check errors in MXF VANC packet handling
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the GStreamer gst-plugins-bad MXF plugin. Insufficient bounds checks when parsing crafted VANC data can cause an out-of-bounds read in the demuxer, while an incorrect buffer size calculation when muxing multiple ancillary packets can cause an out-of-bounds write. Processing affected content may crash the application, resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2569386, 2569387    
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Description OSIDB Bzimport 2026-11-09 12:56:17 UTC
GStreamer-SA-2026-0029: Incorrect or insufficient bounds checks in MXF VANC packet handling affect the demuxer and muxer. Crafted MXF content may trigger unchecked bit/byte reader accesses, invalid array handling, or incorrect packet and wrapper sizes, potentially causing crashes, data corruption, or denial of service. Fixed in gst-plugins-bad 1.28.3.