ESB-2026.3760 PUBLISHED CVSS 8.600000381469727 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3760 Security update for libpng16 16 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: libpng16 Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-33416 CVE-2026-33636 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261368-1 Comment: CVSS (Max): 8.6 CVE-2026-33636 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H EPSS (Max): 0.0% (12th) CVE-2026-33416 2026-04-15 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for libpng16 Announcement ID: SUSE-SU-2026:1368-1 Release Date: 2026-04-15T14:35:40Z Rating: important o bsc#1260754 References: o bsc#1260755 o CVE-2026-33416 Cross-References: o CVE-2026-33636 o 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 o 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 o 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 CVSS scores: o 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 o 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 o 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 o Basesystem Module 15-SP7 o openSUSE Leap 15.6 o SUSE Linux Enterprise Desktop 15 SP7 Affected o SUSE Linux Enterprise Real Time 15 SP7 Products: o SUSE Linux Enterprise Server 15 SP6 o SUSE Linux Enterprise Server 15 SP6 LTSS o SUSE Linux Enterprise Server 15 SP7 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 o SUSE Linux Enterprise Server for SAP Applications 15 SP7 An update that solves two vulnerabilities can now be installed. Description: This update for libpng16 fixes the following issues: o 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). o 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: o openSUSE Leap 15.6 zypper in -t patch SUSE-2026-1368=1 openSUSE-SLE-15.6-2026-1368=1 o Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-1368=1 o SUSE Linux Enterprise Server 15 SP6 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1368=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1368=1 Package List: o openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586) libpng16-compat-devel-1.6.40-150600.3.17.1 libpng16-devel-1.6.40-150600.3.17.1 libpng16-debugsource-1.6.40-150600.3.17.1 libpng16-16-debuginfo-1.6.40-150600.3.17.1 libpng16-tools-1.6.40-150600.3.17.1 libpng16-tools-debuginfo-1.6.40-150600.3.17.1 libpng16-16-1.6.40-150600.3.17.1 o openSUSE Leap 15.6 (x86_64) libpng16-16-32bit-1.6.40-150600.3.17.1 libpng16-compat-devel-32bit-1.6.40-150600.3.17.1 libpng16-devel-32bit-1.6.40-150600.3.17.1 libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1 o openSUSE Leap 15.6 (aarch64_ilp32) libpng16-16-64bit-debuginfo-1.6.40-150600.3.17.1 libpng16-16-64bit-1.6.40-150600.3.17.1 libpng16-compat-devel-64bit-1.6.40-150600.3.17.1 libpng16-devel-64bit-1.6.40-150600.3.17.1 o Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64) libpng16-compat-devel-1.6.40-150600.3.17.1 libpng16-devel-1.6.40-150600.3.17.1 libpng16-debugsource-1.6.40-150600.3.17.1 libpng16-16-debuginfo-1.6.40-150600.3.17.1 libpng16-16-1.6.40-150600.3.17.1 o Basesystem Module 15-SP7 (x86_64) libpng16-16-32bit-1.6.40-150600.3.17.1 libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64) libpng16-compat-devel-1.6.40-150600.3.17.1 libpng16-devel-1.6.40-150600.3.17.1 libpng16-debugsource-1.6.40-150600.3.17.1 libpng16-16-debuginfo-1.6.40-150600.3.17.1 libpng16-16-1.6.40-150600.3.17.1 o SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64) libpng16-16-32bit-1.6.40-150600.3.17.1 libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64) libpng16-compat-devel-1.6.40-150600.3.17.1 libpng16-devel-1.6.40-150600.3.17.1 libpng16-debugsource-1.6.40-150600.3.17.1 libpng16-16-debuginfo-1.6.40-150600.3.17.1 libpng16-16-1.6.40-150600.3.17.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64) libpng16-16-32bit-1.6.40-150600.3.17.1 libpng16-16-32bit-debuginfo-1.6.40-150600.3.17.1 References: o https://www.suse.com/security/cve/CVE-2026-33416.html o https://www.suse.com/security/cve/CVE-2026-33636.html o https://bugzilla.suse.com/show_bug.cgi?id=1260754 o https://bugzilla.suse.com/show_bug.cgi?id=1260755 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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Risk Scores

CVSS v3.1
8.600000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected Products

VendorProductVersions
SUSElibpng16

Timeline

References

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