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OpenAdvisories
Medium · 6.9 CVE-2026-47709 EUVD-2026-46451

libheif has a NULL pointer dereference in heif_image_handle_get_image_tiling for malformed unci image missing ispe

Published Jul 21, 2026 · Updated Jul 22, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
strukturag libheif < 1.22.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 libheif 1.23.1-1 —
Debian 13 libheif 1.19.8-1+deb13u1 —
Debian 12 libheif No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.04 LTS libheif 1.21.2-3ubuntu0.3 —
Ubuntu 25.10 libheif 1.20.2-1ubuntu0.6 —
Ubuntu 24.04 LTS libheif 1.17.6-1ubuntu4.6 —
ReleasePackageFixed inAdvisory
SLES 15 SP7 libheif 1.23.0-150700.3.15.1 SUSE-SU-2026:2622-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 libheif 1.23.0-160000.1.1 SUSE-SU-2026:22153-1
SLES 16.0 libheif 1.23.0-160000.1.1 SUSE-SU-2026:22153-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed libheif 1.22.2-1.1 openSUSE-SU-2026:10878-1
openSUSE Leap 16.0 libheif 1.23.0-160000.1.1 openSUSE-SU-2026:20974-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 libheif +3 1.19.8-1.amzn2023.0.7 ALAS2023-2026-1971

Advisories 5

References