DEBIAN-CVE-2026-62377
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-62377
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62377.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-62377
- Upstream
- Published
- 2026-08-18T22:17:03Z
- Modified
- 2026-09-10T08:47:28Z
- Severity
-
- 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- [none]
- Details
-
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.
- References
Affected packages
Debian:14 / libheif
Package
- Name
- libheif
- Purl
- pkg:deb/debian/libheif?arch=source&distro=forky