USN-8706-1: zlib vulnerability

Publication date

31 August 2026

Overview

zlib could be made to consume excessive CPU resources if it received specially crafted input.


Packages

  • zlib - Lossless data-compression library

Details

It was discovered that zlib incorrectly handled negative length parameters
in CRC32 combine functions. An attacker could use this issue to cause a denial
of service via excessive CPU consumption.

It was discovered that zlib incorrectly handled negative length parameters
in CRC32 combine functions. An attacker could use this issue to cause a denial
of service via excessive CPU consumption.

Update instructions

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

Learn more about how to get the fixes.

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


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