vulnerability
Alpine Linux: CVE-2025-66293: Out-of-bounds Read
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:N/A:C) | Dec 3, 2025 | Dec 9, 2025 | Dec 22, 2025 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:C)
Published
Dec 3, 2025
Added
Dec 9, 2025
Modified
Dec 22, 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 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.
Solution
alpine-linux-upgrade-libpng
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