CVE-2026-3950

NameCVE-2026-3950
DescriptionA 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libheif (PTS)bullseye1.11.0-1vulnerable
bullseye (security)1.11.0-1+deb11u2vulnerable
bookworm, bookworm (security)1.15.1-1+deb12u1vulnerable
trixie1.19.8-1vulnerable
forky, sid1.21.2-3vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libheifsource(unstable)(unfixed)

Notes

https://github.com/strukturag/libheif/issues/1715

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