Out-of-bounds Write Affecting gdk-pixbuf-loader-libheif package, versions <1.23.4-150700.3.21.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-SLES157-GDKPIXBUFLOADERLIBHEIF-20043985
  • published22 Sept 2026
  • disclosed21 Sept 2026

Introduced: 21 Sep 2026

NewCVE-2026-84444  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 gdk-pixbuf-loader-libheif to version 1.23.4-150700.3.21.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gdk-pixbuf-loader-libheif package and not the gdk-pixbuf-loader-libheif package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

libheif is a HEIF and AVIF file format decoder and encoder. Prior to 1.23.2, when WITH_UNCOMPRESSED_CODEC is enabled, heif_context_add_image_tile() accepts an independently constructed tile whose component-plane dimensions do not match the tile geometry established by the prototype image. ImageItem_uncompressed::add_image_tile() passes that tile directly to unc_encoder::encode_tile(), which lacked the check_component_sizes() gate and sizes its output from the configured tile geometry while copying the tile's actual component-plane dimensions. An oversized component plane can therefore make unc_encoder_component_interleave::encode_tile() copy attacker-controlled data beyond the heap output buffer. This issue is fixed in version 1.23.2.

CVSS Base Scores

version 3.1