ALPINE-CVE-2026-32739

Source
https://security.alpinelinux.org/vuln/CVE-2026-32739
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-32739.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-32739
Upstream
Published
2026-05-19T20:16:18Z
Modified
2026-09-14T16:18:08Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0.

References

Affected packages

Alpine:v3.23 / libheif

Package

Name
libheif
Purl
pkg:apk/alpine/libheif?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.23.0-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-32739.json"