Bug 2446751 (CVE-2026-3950)

Summary: CVE-2026-3950 libheif: libheif: Denial of Service via out-of-bounds read in Track::load function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libheif. A local attacker could exploit an out-of-bounds read vulnerability in the `Track::load` function within the `stsz/stts` component. This manipulation could lead to a Denial of Service (DoS), making the affected system or application unavailable.
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Description OSIDB Bzimport 2026-03-11 20:01:29 UTC 
A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.