Bug 2542969

Summary: CVE-2026-88386 libsndfile: libsndfile: Denial of Service via misaligned memory access during WAV parsing [fedora-all]
Product: [Fedora] Fedora Reporter: Ganesh <gnaik>
Component: libsndfileAssignee: Andreas Thienemann <andreas>
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: andreas, mhlavink
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["767a5dde-8504-47e2-b234-f1dce8e5dd7b"]}
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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:    
Bug Blocks: 2540836    

Description Ganesh 2026-09-29 06:50:52 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.

libsndfile 1.2.2 contains a misaligned memory access issue in psf_binheader_readf() while parsing WAV fmt chunks. A specially crafted WAV file can cause the function to cast an unaligned destination address to unsigned int * and perform a 4-byte store. This results in undefined behavior leading to denial of service.