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.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4276-1 advisory.

    - CVE-2026-84383: Heap buffer overflow in scale_nearest_neighbor() via duplicate alpha planes from nested     iden/auxl       items (bsc#1279443).
    - CVE-2026-84384: brotli/zlib decompression paths lack output-size limits, allowing decompression-bomb     OOM/DoS       (bsc#1279445).
    - CVE-2026-84444: Out-of-bounds write in the unci encoder (bsc#1279448).
    - CVE-2026-84446: Sequence decode timing-table initialization allows non-terminating loops and unbounded     memory,       bypassing max_sequence_frames (bsc#1279447).
    - CVE-2026-84447: Derived-image indirect reference chains and tiled offsets bypass decode caching and     MemoryHandle       limits, causing CPU/memory amplification DoS (bsc#1279446).
    - CVE-2026-84448: Heap out-of-bounds read in the inline-mask region API (bsc#1279449).
    - CVE-2026-84450: image item with `clap` property and an ispe declaring a dimension greater than     `INT32_MAX + 1` can       lead to a crash via an abort (bsc#1280002).
    - CVE-2026-84451: crafted HEIF file advertising a 4096 x 4096 uncompressed tile grid can cause an out-of-     bounds read due       to an integer overflow (bsc#1280001).
    - Out-of-bounds read and write in derived-item and pixel-plane handling (bsc#1279444).

    Changes for libheif:

    - Update to version 1.23.4 (jsc#PED-16355)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-84446)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
348723	SUSE SLED15: gdk-pixbuf-loader-libheif / libheif-aom / libheif-dav1d / etc (SUSE-SU-2026:4276-1)	Nessus	SuSE Local Security Checks	Local	critical
348310	Linux Distros Unpatched Vulnerability : CVE-2026-84446	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-84446

high

Tenable Plugins

critical

high