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USN-4108-1: Zstandard vulnerability

21 August 2019

Zstandard could be made to execute arbitrary code if it received specially crafted input.



  • libzstd - fast lossless compression algorithm -- development files


It was discovered that Zstandard incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.

Update instructions

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

Ubuntu 18.04

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


Related notices

  • USN-5593-1: libzstd1, zstd, libzstd1-dev, libzstd