CVE-2026-84446

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::initsampletimingtable compute a logical mnumoutputsamples value that exceeds the uint32t counters used by TrackVisual::decodenextimagesample and...

CVE-2026-62377

A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker could provide a specially crafted HEIF sequence. Processing this malicious file could lead to a reachable assertion or dereference an empty map, resulting in a crash of the application. This...

CVE-2026-50142

A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker can provide a specially crafted HEIF sequence that triggers an unbounded heap allocation. This occurs because the HEIF sequence parser's fixed-size mode is missing a bound check, and an integer...

Linux Distros Unpatched Vulnerability : CVE-2026-62377

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. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heifcontextreadfrommemory can leave the...

CVE-2026-62377

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heifcontextreadfrommemory can leave the context with no registered sequence tracks and crash when heifcontextgettrackctx, 0 is called. HeifContext::gettrack in libheif/context.cc...

EUVD-2026-62191

libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heifcontextreadfrommemory can leave the context with no registered sequence tracks and crash when heifcontextgettrackctx, 0 is called. HeifContext::gettrack in libheif/context.cc...

CVE-2026-50142 libheif: unbounded heap allocation in HEIF sequence parser (stsz fixed-size mode missing bound check)

libheif is a HEIF and AVIF file format decoder and encoder. From 1.19.0 until 1.23.0, a crafted HEIF sequence accepted by heifcontextreadfrommemory with the msf1 sequence brand can cause unbounded heap allocation. In libheif/sequences/seqboxes.cc, Boxstsz::parse applies maxsequenceframes only to...

USN-8526-1: libheif vulnerabilities

Xianrui Dong discovered that libheif had an out-of-bounds read in its HEIF sequence track parser. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. This issue only affected Ubuntu 26.04 LTS. CVE-2026-47254 Junyi Liu discovered that libheif had...

CVE-2026-41069

A flaw was found in libheif, a HEIF High Efficiency Image File Format and AVIF file format decoder and encoder. A remote attacker could exploit this vulnerability by providing a specially crafted, malformed HEIF sequence file. This malformed file can trigger an out-of-bounds read during the core...

JLSEC-2026-571

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Boxstts::getsampleduration, consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and...

JLSEC-2026-570

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, mapping all samples to an empty...

PT-2026-49253

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samples per chunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor m last sample = 0 + 0 - 1 = UINT32 MAX, mapping all samples to an...

CVE-2026-41069

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entrycount == 0 creating no chunks while still passing validation...

CVE-2026-41069

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a malformed HEIF sequence file can trigger an out-of-bounds read in core sequence parsing logic, causing DoS. A malformed file can have stco.entrycount == 0 creating no chunks while still passing validation...

PT-2026-42833

Name of the Vulnerable Software and Affected Versions libheif versions prior to 1.21.3 Description An out-of-bounds read can occur in the core sequence parsing logic when processing a malformed HEIF sequence file, leading to a Denial of Service DoS. This happens when a file has stco.entry count s...

CVE-2026-32739

A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker could exploit this vulnerability by providing a specially crafted HEIF High Efficiency Image File Format sequence file. This would trigger an infinite loop during file parsing, consuming 100% CPU...

CVE-2026-32739

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Boxstts::getsampleduration, consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and...

UBUNTU-CVE-2026-32738

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, mapping all samples to an empty...

CVE-2026-32738

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, mapping all samples to an empty...

CVE-2026-32738

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 792-byte HEIF sequence file with samplesperchunk=0 in the stsc box causes an unsigned integer underflow in the Chunk constructor mlastsample = 0 + 0 - 1 = UINT32MAX, mapping all samples to an empty...