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SUSE: libpng16 Moderate Buffer Overflow and Over-Read Issues 2025:4533-1

suse
Calendar Grey December 30, 2025
Dist Suse Esm H88
SUSE releases security update for libpng16 addressing four vulnerabilities. Install recommended patches immediately.
An update that solves four vulnerabilities can now be installed.

Summary

## This update for libpng16 fixes the following issues: * 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) * 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-2025-65018: Fixed heap buffer overflow in `png_combine_row` triggered via `png_image_finish_read` (bsc#1254160) ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product:

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE heap over-read libpng16

References

* bsc#1254157

* bsc#1254158

* bsc#1254159

* bsc#1254160

Cross-

* CVE-2025-64505

* CVE-2025-64506

* CVE-2025-64720

* CVE-2025-65018

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

Announcement ID: SUSE-SU-2025:4533-1
Release Date: 2025-12-29T16:11:25Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE heap over-read libpng16

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