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SUSE: libpng16 Important Security Fix Advisory 2025:4494

Linuxsecurity •LinuxSecurity Advisories • December 19, 2025

## This update for libpng16 fixes the following issues: * CVE-2025-65018: Fixed heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` (bsc#1254160) * CVE-2025-66293: Fixed LIBPNG out-of-bounds read in `png_image_read_composite` (bsc#1254480) * CVE-2025-64506: Fixed heap buffer over-read in `png_write_image_8bit` with 8-bit input and `convert_to_8bit` enabled (bsc#1254158) * CVE-2025-64720: Fixed buffer overflow in `png_image_read_composite` via incorrect palette premultiplication (bsc#1254159) * CVE-2025-64505: Fixed heap buffer over-read in `png_do_quantize` via malformed palette index (bsc#1254157) ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Read the Full Advisory

* bsc#1254157 * bsc#1254158 * bsc#1254159 * bsc#1254160 * bsc#1254480 Cross- * CVE-2025-64505 * CVE-2025-64506 * CVE-2025-64720 * CVE-2025-65018 * CVE-2025-66293 CVSS scores: * CVE-2025-64505 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2025-64505 ( SUSE ): 6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H * CVE-2025-64505 ( NVD ): 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H * CVE-2025-64506 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N * CVE-2025-64506 ( SUSE ): 6.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H * CVE-2025-64506 ( NVD ): 6.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H * CVE-2025-64720 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Read the Full Advisory