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openSUSE Leap 16.0 libpng16 Important Update CVE-2026-33416 CVE-2026-33636

opensuse
Calendar Grey April 9, 2026
Dist Opensuse Esm H88
Critical security update for openSUSE Leap 16.0 addressing important libpng16 vulnerabilities, enhancing system protection.
An update that solves 2 vulnerabilities and has 2 bug fixes can now be installed.

Description

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 openSUSE security update use the suse recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

zypper in -t patch openSUSE-Leap-16.0-480=1

Topics%20covered

Topics Covered

security advisory information leak arbitrary code execution important OpenSUSE libpng16

Patch

Package List

- openSUSE Leap 16.0:

libpng16-16-1.6.44-160000.6.1

libpng16-16-x86-64-v3-1.6.44-160000.6.1

libpng16-compat-devel-1.6.44-160000.6.1

libpng16-compat-devel-x86-64-v3-1.6.44-160000.6.1

libpng16-devel-1.6.44-160000.6.1

libpng16-devel-x86-64-v3-1.6.44-160000.6.1

libpng16-tools-1.6.44-160000.6.1

References

* bsc#1260754

* bsc#1260755

References:

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

* https://www.suse.com/security/cve/CVE-2026-33636.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20466-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory information leak arbitrary code execution important OpenSUSE libpng16

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