CLSA-2026-1777311274 Fix CVE(s): CVE-2026-22801, CVE-2026-25646

SECURITY UPDATE: Heap buffer over-read in pngwriteimage due to truncation of ptrdifft row stride to pnguint16 - debian/patches/CVE-2026-22801.patch: remove incorrect truncation casts from pngwriteimage16bit, pngwriteimage8bit, and pngimagewritemain so large 65535 and negative row strides are...

libpng: libpng: Information disclosure and denial of service via integer truncation in simplified write API

A flaw was found in libpng, a reference library for PNG Portable Network Graphics raster image files. An integer truncation vulnerability exists in the pngwriteimage16bit and pngwriteimage8bit simplified write API functions. A local attacker could exploit this flaw by providing a negative row...

libpng: LIBPNG heap buffer over-read

A buffer over read flaw has been discovered in libpng. A heap buffer over-read vulnerability exists in libpng's pngwriteimage8bit function when processing 8-bit images through the simplified write API with convertto8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and image...

libpng: libpng: Information disclosure and denial of service via integer truncation in simplified write API

A flaw was found in libpng, a reference library for PNG Portable Network Graphics raster image files. An integer truncation vulnerability exists in the pngwriteimage16bit and pngwriteimage8bit simplified write API functions. A local attacker could exploit this flaw by providing a negative row...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read via the pngwriteimage16bit or pngwriteimage8bit functions when a negative row stride or a stride exceeding 65535 bytes is provided. An attacker can cause a heap buffer over-read by supplying specially crafted input to...

CVE-2026-22801

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions pngwriteimage16bit and pngwriteimage8bit causes heap buffer...

AZL-74502 CVE-2026-22801 affecting package fltk 1.3.8-1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions pngwriteimage16bit and pngwriteimage8bit causes heap buffer...

Amazon Linux 2 : firefox, --advisory ALAS2FIREFOX-2025-048 (ALASFIREFOX-2025-048)

The version of firefox installed on the remote host is prior to 140.5.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2FIREFOX-2025-048 advisory. A heap buffer over-read vulnerability exists in libpng's pngdoquantize function when processing PNG files with...

AZL-70915 CVE-2025-64506 affecting package openjpeg2 2.3.1-12

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's pngwriteimage8bit function when processing 8-bit images through t...

ALPINE-CVE-2025-64506

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. From version 1.6.0 to before 1.6.51, a heap buffer over-read vulnerability exists in libpng's pngwriteimage8bit function when processing 8-bit images through t...

UBUNTU-CVE-2019-3572

An issue was discovered in libming 0.4.8. There is a heap-based buffer over-read in the function writePNG in the file util/dbl2png.c of the dbl2png command-line program. Because this is associated with an erroneous call to pngwriterow in libpng, an out-of-bounds write might occur for some memory...