CVE-2026-49271 libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder

libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unitoffset + unitsize. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector...

USN-8454-1: libheif vulnerabilities

Elhanan Haenel discovered that libheif incorrectly handled certain malformed HEIF sequence files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. CVE-2026-32738 Elhanan Haenel discovered that libheif incorrectly...

USN-8454-1 libheif vulnerabilities

Elhanan Haenel discovered that libheif incorrectly handled certain malformed HEIF sequence files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. CVE-2026-32738 Elhanan Haenel discovered that libheif incorrectly...

Libheif < 1.22.1 OOB Read (macOS)

According to its self-reported version, libheif prior to 1.22.1 is affected by an out-of-bounds read vulnerability. The uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unitoffset + unitsize. Because the addition can wrap, a crafted HEIF file can pass the range chec...

Libheif 1.19.x < 1.23.0 DoS (macOS)

According to its self-reported version, libheif on the remote host is affected by a denial of service vulnerability. A crafted HEIF sequence file can cause libheif to perform unbounded heap allocation due to a missing bound check in the stsz fixed-size mode of the HEIF sequence parser, leading to...

Linux Distros Unpatched Vulnerability : CVE-2026-47178

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 versions 1.19.0 through 1.21.2, a crafted HEIF file uncompressed unci codec, tiled,...

OPENSUSE-SU-2026:20974-1 Security update for libheif

This update for libheif fixes the following issues Update to 1.23.0: - CVE-2025-68431: heap buffer over-read in HeifPixelImage: overlay via crafted HEIF that exercises the overlay image item bsc1255735. - CVE-2026-3949: manipulation of the argument size of a malicious frame can lead to...

SUSE-SU-2026:22153-1 Security update for libheif

This update for libheif fixes the following issues Update to 1.23.0: - CVE-2025-68431: heap buffer over-read in HeifPixelImage: overlay via crafted HEIF that exercises the overlay image item bsc1255735. - CVE-2026-3949: manipulation of the argument size of a malicious frame can lead to...

gdk-pixbuf-loader-libheif-1.23.0-2.1 on GA media (moderate)

gdk-pixbuf-loader-libheif-1.23.0-2.1 on GA media Announcement ID: openSUSE-SU-2026:10983-1 Rating: moderate Cross-References: CVE-2026-49271 CVE-2026-50142 CVSS scores: CVE-2026-49271 SUSE : 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVE-2026-49271 SUSE : 6.7...

PT-2026-48609

Name of the Vulnerable Software and Affected Versions gdk-pixbuf-loader-libheif versions prior to 1.23.0-2.1 Description Security issues were identified and resolved in the gdk-pixbuf-loader-libheif package. Recommendations Update to version 1.23.0-2.1...

PT-2026-48604

Name of the Vulnerable Software and Affected Versions libheif versions prior to 1.22.1 Description The uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit offset + unit size. An integer wrap during this addition allows a crafted HEIF file to bypass range checks an...

OPENSUSE-SU-2026:10983-1 gdk-pixbuf-loader-libheif-1.23.0-2.1 on GA media

These are all security issues fixed in the gdk-pixbuf-loader-libheif-1.23.0-2.1 package on the GA media of openSUSE Tumbleweed...

Amazon Linux 2023 : heif-pixbuf-loader, libheif, libheif-devel (ALAS2023-2026-1814)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1814 advisory. 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...

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-2026-572

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...

JLSEC-2026-573

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...

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-2026-49257

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a crafted HEIF sequence file where the saiz box declares more samples than actually exist in the track's chunk table causes a heap-buffer-overflow out-of-bounds read in the SampleAuxInfoReader constructor. T...

PT-2026-49256

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.entry count == 0 creating no chunks while still passing validation...

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...