CLSA-2026-1778054892 libpng: Fix of 2 CVEs

CVE-2026-33416: fix use-after-free via pointer aliasing in pngsettRNS and pngsetPLTE - CVE-2026-33636: fix out-of-bounds read/write in ARM NEON palette expansion...

CVE-2026-33416

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.2.1 through 1.6.55, pngsettRNS and pngsetPLTE each alias a heap-allocated buffer between pngstruct and pnginfo, sharing a single allocation acros...

CVE-2022-36947

Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow...

CVE-2022-36947

Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow...

libpng png_handle_tRNS flaw

The pnghandletRNS function in pngrutil.c in libpng before 1.0.25 and 1.2.x before 1.2.17 allows remote attackers to cause a denial of service application crash via a grayscale PNG image with a bad tRNS chunk CRC value...

CVE-2004-0597

Multiple buffer overflows in libpng 1.2.5 and earlier, as used in multiple products, allow remote attackers to execute arbitrary code via malformed PNG images in which 1 the pnghandletRNS function does not properly validate the length of transparency chunk tRNS data, or the 2 pnghandlesBIT or 3...

Debian DSA-536-1 : libpng - several vulnerabilities

Chris Evans discovered several vulnerabilities in libpng : - CAN-2004-0597 Multiple buffer overflows exist, including when handling transparency chunk data, which could be exploited to cause arbitrary code to be executed when a specially crafted PNG image is processed - CAN-2004-0598 Multiple NUL...

CVE-2004-0597

Multiple buffer overflows in libpng 1.2.5 and earlier, as used in multiple products, allow remote attackers to execute arbitrary code via malformed PNG images in which 1 the pnghandletRNS function does not properly validate the length of transparency chunk tRNS data, or the 2 pnghandlesBIT or 3...

libpng fails to properly check length of transparency chunk (tRNS) data

Overview The Portable Network Graphics library libpng contains a remotely exploitable vulnerability, which could lead to arbitrary code execution on an affected system. Description The Portable Network Graphics PNG image format is used as an alternative to other image formats such as the Graphics...