DEBIAN-CVE-2025-64505
Record from OSV · Published November 25, 2025
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| libpng1.6 | Debian:13 | 1.6.48-1+deb13u1 |
| libpng1.6 | Debian:14 | 1.6.51-1 |
| libpng1.6 | Debian:12 | 1.6.39-2+deb12u1 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Debian:13 | libpng1.6 | 1.6.48-1, 0 |
| Debian:14 | libpng1.6 | 1.6.48-1, 1.6.50-1, 1.6.50-1~exp1 |
| Debian:12 | libpng1.6 | 0, 1.6.39-2 |
Timeline
- Nov 25, 2025 CVE Published
- Oct 23, 2026 CVE Updated
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