CVE-2025-64505
Description
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to version 1.6.51, a heap buffer over-read vulnerability exists in libpng's png_do_quantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palette_lookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file with out-of-range palette indices that trigger out-of-bounds memory access. This issue has been patched in version 1.6.51.
How to fix
- libpng libpng1.6.51 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| libpng libpng | v < 1.6.51 | 1.6.51 |
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