CVE-2026-33636

A flaw was found in libpng. A remote attacker could exploit an out-of-bounds read and write vulnerability in the ARM/AArch64 Neon-optimized palette expansion path. This occurs when processing a final partial chunk of 8-bit paletted rows without verifying sufficient input pixels, leading to...

[slackware-security] libpng

New libpng packages are available for Slackware 15.0 and -current to fix security issues. Here are the details from the Slackware 15.0 ChangeLog: patches/packages/libpng-1.6.56-i586-1slack15.0.txz: Upgraded. This update fixes security issues: Use-after-free via pointer aliasing in pngsettRNS and...

Slackware: Security Advisory (SSA:2026-085-02)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Slackware Linux 15.0 / current libpng Multiple Vulnerabilities (SSA:2026-085-02)

The version of libpng installed on the remote host is prior to 1.6.56. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2026-085-02 advisory. New libpng packages are available for Slackware 15.0 and -current to fix security issues. Tenable has extracted the precedin...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in the pngsettRNS and pngsetPLTE functions, where a heap-allocated buffer is aliased between two structures with independent lifetimes. An attacker can cause memory corruption or potentially execute arbitrary code by...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read through the NEON palette expansion functions in arm/paletteneonintrinsics.c. An attacker can corrupt memory or crash the application by supplying a PNG row whose width is not a multiple of the NEON chunk size. Notes -...

AZL-81348 CVE-2026-33636 affecting package optipng 0.7.8-5

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...

DEBIAN-CVE-2026-33636

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...

CVE-2026-33636

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...

AZL-80993 CVE-2026-33636 affecting package libpng for versions less than 1.6.56-1

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...

AZL-81312 CVE-2026-33636 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. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...

AZL-81345 CVE-2026-33416 affecting package optipng 0.7.8-5

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...

ALPINE-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...

AZL-81333 CVE-2026-33416 affecting package libpng15 1.5.30-15

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...

AZL-81336 CVE-2026-33416 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. 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...

AZL-81324 CVE-2026-33416 affecting package gdal 3.6.3-2

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...

AZL-81315 CVE-2026-33416 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. 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...

AZL-81330 CVE-2026-33416 affecting package libpng12 1.2.57-16

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-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-2026-33636

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG Portable Network Graphics raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palette expansion path. When expanding 8-bit...