vulnerability
Debian: CVE-2025-64505: libpng1.6 -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:P/I:N/A:C) | Dec 8, 2025 | Dec 8, 2025 | Dec 11, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:C)
Published
Dec 8, 2025
Added
Dec 8, 2025
Modified
Dec 11, 2025
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.
Solution
debian-upgrade-libpng1-6
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