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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. Prior to 1.23.2, crafted HEIF sequence timing and edit-list data can make Track::init_sample_timing_table() compute a logical m_num_output_samples value that exceeds the uint32_t counters used by Track_Visual::decode_next_image_sample() and Track::get_next_sample_raw_data(). The resulting comparison can never reach the oversized output count, causing non-terminating decode or raw-sample loops and bypassing max_sequence_frames. The same sequence path repeatedly calls Box_stts::get_sample_duration() and allocates Chunk::m_sample_ranges and Track::m_presentation_timeline outside MemoryHandle accounting, allowing severe CPU and memory exhaustion from a small file. This issue is fixed in version 1.23.2.
This bug is already fixed in a published Bodhi update.
FEDORA-EPEL-2026-0d891ec3ad (aom-3.13.3-1.el10_3 and libheif-1.23.5-4.el10_3) has been submitted as an update to Fedora EPEL 10.3. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-0d891ec3ad
FEDORA-EPEL-2026-12b7f6fc6c (aom-3.13.3-1.el9 and libheif-1.23.5-2.el9) has been submitted as an update to Fedora EPEL 9. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-12b7f6fc6c
FEDORA-EPEL-2026-3f535077b3 (aom-3.13.3-1.el10_2 and libheif-1.23.5-4.el10_2) has been submitted as an update to Fedora EPEL 10.2. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-3f535077b3
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-2026-12b7f6fc6c has been pushed to the Fedora EPEL 9 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-12b7f6fc6c See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-EPEL-2026-3f535077b3 has been pushed to the Fedora EPEL 10.2 testing repository. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-3f535077b3 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
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.
FEDORA-EPEL-2026-12b7f6fc6c (aom-3.13.3-1.el9 and libheif-1.23.5-2.el9) has been pushed to the Fedora EPEL 9 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-EPEL-2026-3f535077b3 (aom-3.13.3-1.el10_2 and libheif-1.23.5-4.el10_2) has been pushed to the Fedora EPEL 10.2 stable repository. If problem still persists, please make note of it in this bug report.