CVE-2026-22801

Description

LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. From 1.6.26 to 1.6.53, there is an integer truncation in the libpng simplified write API functions png_write_image_16bit and png_write_image_8bit causes heap buffer over-read when the caller provides a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes. The bug was introduced in libpng 1.6.26 (October 2016) by casts added to silence compiler warnings on 16-bit systems. This vulnerability is fixed in 1.6.54.

How to fix CVE-2026-22801

To remediate CVE-2026-22801, upgrade the affected package to a fixed version below.

• —upgrade to 1.6.54-r0 or later
• —upgrade to 1.6.37-3+deb11u2 or later

Is CVE-2026-22801 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 1.6.54-r0
• from 0, < 1.6.37-3+deb11u2

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2026-22801
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2026-22801