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SUSE 16.0 libpng16 Important Update CVE-2026-33416 CVE-2026-33636

suse
Calendar Grey April 21, 2026
Dist Suse Esm H88
Update for libpng16 addresses important vulnerabilities with risks of code execution and information leaks. Patch now.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for libpng16 fixes the following issues: * CVE-2026-33416: use-after-free via pointer aliasing in `png_set_tRNS` and `png_set_PLTE` can lead to arbitrary code execution (bsc#1260754). * CVE-2026-33636: out-of-bounds read/write in the palette expansion on ARM Neon can lead to information leak and crashes (bsc#1260755). ## 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: * SUSE Linux Enterprise Server 16.0 zypper in -t patch SUSE-SLES-16.0-480=1 * SUSE Linux Enterprise Server for SAP applications 16.0 zypper in -t patch SUSE-SLES-16.0-480=1 ## Package List: * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)

Topics%20covered

Topics Covered

security advisory information leak SuSE arbitrary code execution important libpng16

References

* bsc#1260754

* bsc#1260755

Cross-

* CVE-2026-33416

* CVE-2026-33636

CVSS scores:

* CVE-2026-33416 ( SUSE ): 9.2

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-33416 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-33416 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

* CVE-2026-33636 ( SUSE ): 8.3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

* CVE-2026-33636 ( SUSE ): 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

* CVE-2026-33636 ( NVD ): 7.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Affected Products:

* SUSE Linux Enterprise Server 16.0

* SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves two vulnerabilities can now be installed.

##

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21138-1
Release Date: 2026-04-07T11:57:38Z
Rating: important

Topics%20covered

Topics Covered

security advisory information leak SuSE arbitrary code execution important libpng16

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