DEBIAN-CVE-2026-50142
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-50142
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-50142.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-50142
- Upstream
- Published
- 2026-08-18T22:16:52Z
- Modified
- 2026-09-10T09:00:33Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.0, a crafted HEIF sequence accepted by heif_context_read_from_memory() with the msf1 sequence brand can cause unbounded heap allocation. In libheif/sequences/seq_boxes.cc, Box_stsz::parse() applies max_sequence_frames only to variable-size samples, so fixed-size mode accepts an attacker-controlled sample_count without a bound. In libheif/sequences/track.cc, Track::load() also adds current_sample_idx and samples_per_chunk in 32-bit arithmetic, allowing the consistency check to be bypassed by wraparound. The resulting values reach the Chunk::Chunk() allocation path, which can consume gigabytes of memory and crash or stall the process through memory exhaustion. This issue is fixed in version 1.23.0.
- References
Affected packages
Debian:12 / libheif
Package
- Name
- libheif
- Purl
- pkg:deb/debian/libheif?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1.*
Debian:14 / libheif
Package
- Name
- libheif
- Purl
- pkg:deb/debian/libheif?arch=source&distro=forky