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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1.
FEDORA-EPEL-2026-0d891ec3ad (aom-3.13.3-1.el10_3 and libheif-1.23.5-3.el10_3) has been submitted as an update to Fedora EPEL 10.3. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-0d891ec3ad
FEDORA-EPEL-2026-0d891ec3ad has been pushed to the Fedora EPEL 10.3 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-0d891ec3ad See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2026-18d39b7b8d has been pushed to the Fedora EPEL 10.4 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-18d39b7b8d See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
This package has changed maintainer in Fedora. Reassigning to the new maintainer of this component.
FEDORA-EPEL-2026-18d39b7b8d (aom-3.13.3-1.el10_4 and libheif-1.23.5-4.el10_4) has been pushed to the Fedora EPEL 10.4 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-EPEL-2026-0d891ec3ad (aom-3.13.3-1.el10_3 and libheif-1.23.5-4.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository. If problem still persists, please make note of it in this bug report.