CVE-2026-32738 libheif has a Heap OOB Read/SEGV Crash via Zero samples_per_chunk

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-2026-32740: Out-of-bounds Write

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap-buffer-overflow write vulnerability in the grid tile compositing, allowing an attacker to write 64 bytes of fully attacker-controlled data past the end of a chroma plane heap allocation by craftin...

libheif 安全漏洞

LibHEIF is a open-source decoder and encoder for the ISO/IEC 23008-12:2017 HEIF file format developed by Struktur. Versions of LibHEIF prior to 1.21.2 contain a security vulnerability. This vulnerability stems from an infinite loop in Boxstts::getsampleduration, which consumes 100% of the CPU...

PT-2026-42003

Name of the Vulnerable Software and Affected Versions libheif versions prior to 1.22.0 Description A heap-buffer-overflow write exists in the grid tile compositing of this HEIF and AVIF file format decoder and encoder. A remote attacker can write 64 bytes of fully controlled data beyond the end o...

libheif 缓冲区错误漏洞

Libheif is a open-source decoder and encoder for the ISO/IEC 23008-12:2017 HEIF file format developed by Struktur. Versions of Libheif prior to 1.21.2 contain a buffer error vulnerability. This vulnerability stems from a heap buffer overflow during tile composition, allowing attackers to write...

PT-2026-42006

Name of the Vulnerable Software and Affected Versions libheif versions prior to 1.22.0 Description When decoding a HEIF grid image with strict decoding set to false the default, a corrupted tile may fail to decode silently. The library returns heif error Ok without indicating failure, resulting i...

PT-2026-42007

Name of the Vulnerable Software and Affected Versions libheif versions prior to 1.22.0 Description A heap buffer over-read exists in the HeifPixelImage::overlay function within libheif/pixelimage.cc. This occurs when compositing an overlay image where the child image uses a different bit depth fo...

CVE-2026-32739: Loop with Unreachable Exit Condition

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...

CVE-2026-32741: Heap-based Buffer Overflow

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decodemaskimage. When decoding a HEIF file containing a mask image mski, the function copies the full iloc extent data into a pixel buffer using memcpydst,...

CVE-2026-32814: Exposure of Sensitive Information to an Unauthorized Actor

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, when decoding a HEIF grid image with strictdecoding=false the default, a corrupted tile silently fails to decode and the library returns heiferrorOk with no indication of failure, leading to an uninitialized...

CVE-2026-32738: Out-of-bounds Read

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...

libheif 信息泄露漏洞

LibHEIF is a open-source decoder and encoder for the ISO/IEC 23008-12:2017 HEIF file format developed by Struktur. Versions of LibHEIF prior to 1.21.2 contained a vulnerability known as information leakage. This vulnerability occurred when decoding grid images, where tile regions that failed to...

libheif 安全漏洞

LibHEIF is a open-source decoder and encoder for the ISO/IEC 23008-12:2017 HEIF file format developed by Struktur. Versions of LibHEIF prior to 1.21.2 contain security vulnerabilities. These vulnerabilities stem from a heap buffer overflow in the MaskImageCodec::decodemaskimage function, where no...

CVE-2026-32882: Out-of-bounds Read

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap buffer over-read in HeifPixelImage::overlay in libheif/pixelimage.cc. When compositing an overlay image iovl whose child image has a different bit depth for the alpha channel than for the color...

libheif:file_fuzzer: Heap-buffer-overflow in vvdec::VVDecImpl::xConvertPayloadToRBSP

Project: https://github.com/strukturag/libheif.git Detailed Report: https://oss-fuzz.com/testcase?key=4552698233159680 Project: libheif Fuzzing Engine: afl Fuzz Target: filefuzzer Job Type: aflasanlibheif Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x7b05fbae001f Cra...

SUSE SLED15 / SLES15 Security Update : libheif (SUSE-SU-2026:1660-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1660-1 advisory. - CVE-2026-3949: Manipulation of the argument size of a malicious frame can lead to out-of-bounds read bsc1259541...

libheif:encoder_fuzzer: Global-buffer-overflow in svt_aom_get_blk_var_map

Project: https://github.com/strukturag/libheif.git Detailed Report: https://oss-fuzz.com/testcase?key=5042418566365184 Project: libheif Fuzzing Engine: afl Fuzz Target: encoderfuzzer Job Type: aflasanlibheif Platform Id: linux Crash Type: Global-buffer-overflow READ 1 Crash Address: 0x5988b570c04...

SUSE-SU-2026:1660-1 Security update for libheif

This update for libheif fixes the following issues: - CVE-2026-3949: Manipulation of the argument size of a malicious frame can lead to out-of-bounds read bsc1259541...

Security update for libheif

This update for libheif fixes the following issues: CVE-2026-3949: Manipulation of the argument size of a malicious frame can lead to out-of-bounds read bsc1259541. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper...

PT-2026-36267

libheif is an HEIF and AVIF file format decoder and encoder. Prior to version 1.21.0, a crafted HEIF that exercises the overlay image item path triggers a heap buffer over-read in HeifPixelImage::overlay. The function computes a negative row length likely from an unclipped overlay rectangle or...