vulnerability
Debian: CVE-2025-64720: libpng1.6 -- security update
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:N/A:C) | Dec 8, 2025 | Dec 8, 2025 | Dec 11, 2025 |
Severity
8
CVSS
(AV:N/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. From version 1.6.0 to before 1.6.51, an out-of-bounds read vulnerability exists in png_image_read_composite when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. The palette compositing code in png_init_read_transformations incorrectly applies background compositing during premultiplication, violating the invariant component ⤠alpha à 257 required by the simplified PNG API. This issue has been patched in version 1.6.51.
Solution
debian-upgrade-libpng1-6
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