| Name | CVE-2026-3950 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1130640 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| libheif (PTS) | bullseye | 1.11.0-1 | fixed |
| bullseye (security) | 1.11.0-1+deb11u2 | fixed |
| bookworm, bookworm (security) | 1.15.1-1+deb12u1 | fixed |
| trixie | 1.19.8-1 | fixed |
| forky, sid | 1.21.2-3 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| libheif | source | bullseye | (not affected) | | | |
| libheif | source | bookworm | (not affected) | | | |
| libheif | source | trixie | (not affected) | | | |
| libheif | source | (unstable) | (unfixed) | | | 1130640 |
Notes
[trixie] - libheif <not-affected> (Vulnerable code not present)
[bookworm] - libheif <not-affected> (Vulnerable code not present)
[bullseye] - libheif <not-affected> (Vulnerable code not present)
Introduced after: https://github.com/strukturag/libheif/commit/16e205f12bfe9a3717ca1d3b447fa83f66bc87e9 (v1.20.0)
https://github.com/strukturag/libheif/issues/1715
Fixed by: https://github.com/strukturag/libheif/pull/1721