Description
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 png_write_image_8bit function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. The vulnerability affects 8-bit grayscale+alpha, RGB/RGBA, and images with incomplete row data. A conditional guard incorrectly allows 8-bit input to enter code expecting 16-bit input, causing reads up to 2 bytes beyond allocated buffer boundaries. This issue has been patched in version 1.6.51.
Details
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libpng | 1.6.0 | 1.6.51 |
References
Similar Threats
- Unknown ALPINE-CVE-2026-40930
- Unknown ALSA-2026:18028
- Unknown ALSA-2026:18064
- Unknown ALSA-2026:14790
- Unknown ALSA-2026:14791
Exploit Protection
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