Bug 2505925 (CVE-2026-47178) - CVE-2026-47178 libheif: libheif: Arbitrary code execution via crafted HEIF file
Summary: CVE-2026-47178 libheif: libheif: Arbitrary code execution via crafted HEIF file
Keywords:
Status: NEW
Alias: CVE-2026-47178
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2506572 2506573
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-21 22:53 UTC by OSIDB Bzimport
Modified: 2026-07-23 19:12 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-07-21 22:53:48 UTC 
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.19.0 through 1.21.2, a crafted HEIF file (uncompressed `unci` codec, tiled, component-interleaved, 4:2:0) triggers a heap out-of-bounds write in libheif's uncompressed tile decoder. The write overwrites the C++ vtable pointer of an adjacent `unc_decoder_component_interleave` object; the next virtual call dispatches to an attacker-chosen address. Version 1.22.0 patches the issue.
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