SB2025121977 - SUSE update for libpng16

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2025-64505)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the png_do_quantize function when processing PNG files with malformed palette indices. A remote attacker can pass a specially crafted image file to the application, trigger an out-of-bounds read error and read contents of memory on the system.

2) Out-of-bounds read (CVE-ID: CVE-2025-64506)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the png_write_image_8bit() function when processing 8-bit images through the simplified write API with convert_to_8bit enabled. A remote attacker can pass a specially crafted image file to the application, trigger an out-of-bounds read error and read contents of memory on the system.

3) Out-of-bounds read (CVE-ID: CVE-2025-64720)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the png_image_read_composite() function when processing palette images with PNG_FLAG_OPTIMIZE_ALPHA enabled. A remote attacker can pass a specially crafted image file to the application, trigger an out-of-bounds read error and read contents of memory on the system.

4) Heap-based buffer overflow (CVE-ID: CVE-2025-65018)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the png_image_finish_read() function when processing 16-bit interlaced PNGs with 8-bit output format. A remote attacker can pass a specially crafted image file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

5) Out-of-bounds read (CVE-ID: CVE-2025-66293)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the png_image_read_composite() function. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2025/suse-su-20254494-1/