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SUSE: libpng16 Important Security Patch for Multiple Issues 2025:4436-1

suse
Calendar Grey December 17, 2025
Dist Suse Esm H88
Critical update for libpng16 addressing five significant threats, including buffer overflows, recommended for installation.
An update that solves five vulnerabilities can now be installed.

Summary

## 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".

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE heap corruption important libpng16

References

* 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:4436-1
Release Date: 2025-12-17T13:56:34Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE heap corruption important libpng16

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