CVE-2026-41069 Affecting libheif package, versions <1.20.2-1ubuntu0.4


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.25% (17th percentile)

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  • Snyk IDSNYK-UBUNTU2510-LIBHEIF-16877274
  • published17 Jun 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-41069  (opens in a new tab)

How to fix?

Upgrade Ubuntu:25.10 libheif to version 1.20.2-1ubuntu0.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libheif package and not the libheif package as distributed by Ubuntu. See How to fix? for Ubuntu:25.10 relevant fixed versions and status.

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entry_count == 0 (creating no chunks) while still passing validation because saio.entry_count == 0 matches, but with saiz.sample_count > 0 the SampleAuxInfoReader constructor still enters its loop. This leads to an out-of-bounds dereference on the empty chunks[0] in chunked mode.

CVSS Base Scores

version 3.1