Out-of-Bounds Affecting libheif package, versions <1.23.1-1


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.12% (2nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-LIBHEIF-15560182
  • published14 Mar 2026
  • disclosed11 Mar 2026

Introduced: 11 Mar 2026

CVE-2026-3950  (opens in a new tab)
CWE-119  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:unstable libheif to version 1.23.1-1 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 Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

A vulnerability was identified in strukturag libheif up to 1.21.2. This impacts the function Track::load of the file libheif/sequences/track.cc of the component stsz/stts. The manipulation leads to out-of-bounds read. The attack needs to be performed locally. The exploit is publicly available and might be used. Applying a patch is the recommended action to fix this issue. The patch available is inofficial and not approved yet.

CVSS Base Scores

version 3.1