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SUSE libpng12 Significant Code Execution Vulnerabilities 2026-1702-1

suse
Calendar Grey May 6, 2026
Dist Suse Esm H88
SUSE updates libpng12 to fix critical issues like code execution and data disclosure. Important update available now.
An update that solves two vulnerabilities and contains one feature can now be installed.

Summary

## This update for libpng12 fixes the following issues: Update to version 1.2.59 (jsc#PED-16191). * 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-2026-34757: use-after-free in `png_set_PLTE`, `png_set_tRNS` and `png_set_hIST` can lead to corrupted chunk data and potential heap information disclosure (bsc#1261957). ## 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 12 SP5 LTSS zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-1702=1 * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security

Topics%20covered

Topics Covered

security advisory SuSE code execution important information disclosure libpng12

References

* bsc#1260754

* bsc#1261957

* jsc#PED-16191

Cross-

* CVE-2026-33416

* CVE-2026-34757

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-2026-34757 ( SUSE ): 5.1

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

* CVE-2026-34757 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

* CVE-2026-34757 ( NVD ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected Products:

* SUSE Linux Enterprise High Performance Computing 12 SP5

* SUSE Linux Enterprise Server 12 SP5

* SUSE Linux Enterprise Server 12 SP5 LTSS

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1702-1
Release Date: 2026-05-06T07:43:00Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE code execution important information disclosure libpng12

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