CVE-2026-84446 (GCVE-0-2026-84446)
Vulnerability from cvelistv5
Published
2026-09-18 15:54
Modified
2026-09-21 20:50
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
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.
Impacted products
Vendor Product Version
strukturag libheif Version: < 1.23.2
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Show details on NVD website


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