Home / mailings

PDF

[USN-8899-1] libpng vulnerability

Posted on 08 October 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8899-1
October 07, 2026

libpng1.6 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.04 LTS
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

libpng could be made to crash if it opened a specially crafted file.

Software Description:
- libpng1.6: PNG (Portable Network Graphics) file library

Details:

Ze Sheng discovered that libpng incorrectly handled certain compressed
data chunks in PNG files. An attacker could possibly use this issue to
cause a denial of service.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
libpng-dev 1.6.57-1ubuntu0.1
libpng-tools 1.6.57-1ubuntu0.1
libpng16-16t64 1.6.57-1ubuntu0.1

Ubuntu 24.04 LTS
libpng-dev 1.6.43-5ubuntu0.7
libpng-tools 1.6.43-5ubuntu0.7
libpng16-16t64 1.6.43-5ubuntu0.7

Ubuntu 22.04 LTS
libpng-dev 1.6.37-3ubuntu0.7
libpng-tools 1.6.37-3ubuntu0.7
libpng16-16 1.6.37-3ubuntu0.7

Ubuntu 20.04 LTS
libpng-dev 1.6.37-2ubuntu0.1~esm4
Available with Ubuntu Pro
libpng-tools 1.6.37-2ubuntu0.1~esm4
Available with Ubuntu Pro
libpng16-16 1.6.37-2ubuntu0.1~esm4
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libpng-dev 1.6.34-1ubuntu0.18.04.2+esm4
Available with Ubuntu Pro
libpng-tools 1.6.34-1ubuntu0.18.04.2+esm4
Available with Ubuntu Pro
libpng16-16 1.6.34-1ubuntu0.18.04.2+esm4
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libpng16-16 1.6.20-2ubuntu0.1~esm5
Available with Ubuntu Pro
libpng16-dev 1.6.20-2ubuntu0.1~esm5
Available with Ubuntu Pro
libpng16-devtools 1.6.20-2ubuntu0.1~esm5
Available with Ubuntu Pro
libpng16-tools 1.6.20-2ubuntu0.1~esm5
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8899-1
CVE-2026-46675

Package Information:
https://launchpad.net/ubuntu/+source/libpng1.6/1.6.57-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libpng1.6/1.6.43-5ubuntu0.7
https://launchpad.net/ubuntu/+source/libpng1.6/1.6.37-3ubuntu0.7

--===============7613892020311351995==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP