Bug 2505034 (CVE-2026-47709) - CVE-2026-47709 libheif: libheif: Denial of Service via malformed HEIF image
Summary: CVE-2026-47709 libheif: libheif: Denial of Service via malformed HEIF image
Keywords:
Status: NEW
Alias: CVE-2026-47709
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2506069 2506070
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-21 22:15 UTC by OSIDB Bzimport
Modified: 2026-07-22 11:30 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-07-21 22:15:10 UTC 
libheif is a HEIF and AVIF file format decoder and encoder. Versions prior to 1.22.0 crashes in the public C API `heif_image_handle_get_image_tiling()` when a malformed uncompressed HEIF image item has an associated `uncC` property but no associated `ispe` property. In debug builds this trips the `ispe && uncC` assertion in `ImageItem_uncompressed::get_heif_image_tiling()`. In a release/NDEBUG ASan build, the same file causes a null pointer read at address `0xa8`. Version 1.22.0 fixes the issue.
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