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SUSE Micro 6.1 libpng16 Important Security Fix 2026-21038-1

suse
Calendar Grey April 13, 2026
Dist Suse Esm H88
Critical updates for libpng16 in SUSE fix vulnerabilities leading to information leaks and potential code execution.
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 Micro 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-479=1 ## Package List: * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64) * libpng16-debugsource-1.6.43-slfo.1.1_4.1 * libpng16-16-1.6.43-slfo.1.1_4.1 * libpng16-16-debuginfo-1.6.43-slfo.1.1_4.1

Topics%20covered

Topics Covered

security advisory information leak SuSE 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 Micro 6.1

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-33416.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:21038-1
Release Date: 2026-04-09T10:48:50Z
Rating: important

Topics%20covered

Topics Covered

security advisory information leak SuSE code execution important libpng16

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