Loop with Unreachable Exit Condition ('Infinite Loop') Affecting libheif-svtenc package, versions <1.23.0-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-SLES1600-LIBHEIFSVTENC-17439812
  • published24 Jun 2026
  • disclosed17 Jun 2026

Introduced: 17 Jun 2026

CVE-2026-32739  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libheif-svtenc to version 1.23.0-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libheif-svtenc package and not the libheif-svtenc package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1