CVE-2026-22801

A flaw was found in libpng, a reference library for PNG (Portable Network Graphics) raster image files. An integer truncation vulnerability exists in the png_write_image_16bit and png_write_image_8bit simplified write API functions. A local attacker could exploit this flaw by providing a negative row stride (for bottom-up image layouts) or a stride exceeding 65535 bytes, leading to a heap buffer over-read. This can result in information disclosure or a denial of service (DoS) to the system.

This vulnerability is rated Moderate for Red Hat products. An integer truncation flaw in the libpng simplified write API functions (png_write_image_16bit, png_write_image_8bit) can lead to a heap buffer over-read. Exploitation requires an application to process specially crafted input that provides a negative row stride or a stride exceeding 65535 bytes, potentially resulting in denial of service or information disclosure.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.