Bug 2513018

Summary: CVE-2026-19387 gstreamer1-plugins-bad-free: gstreamer: heap out-of-bounds write in adpcmdec IMA/DVI ADPCM decoder [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: gstreamer1-plugins-bad-freeAssignee: Yaakov Selkowitz <yselkowi>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: 45CC: dominik, gwync, multimedia-sig, negativo17, wtaymans, yselkowi
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["9b5a004a-6820-4242-9f05-2cfb29b01b10"]}
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-08-19 15:46:42 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2513015    

Description Ganesh 2026-08-10 02:57:20 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in GStreamer gst-plugins-bad (adpcmdec). The IMA/DVI ADPCM decoder validated the per-block sample count with (n_samples - channels) % 8 == 0, which does not ensure alignment with the decode loop that writes 8 * channels samples per iteration. A crafted multi-channel IMA ADPCM WAV can pass this check and cause a heap out-of-bounds write of decoded sample values that are partially derived from attacker-controlled compressed audio data. The adpcmdec element is auto-plugged by decodebin/playbin, so processing untrusted media (players, thumbnailers, transcoders) can trigger the issue, resulting in application crash, denial of service, memory corruption, or potentially code execution. Fixed upstream in gst-plugins-bad 1.28.6 (GStreamer-SA-2026-0077).
Comment 1 Aoife Moloney 2026-08-17 15:50:02 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.