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USN-5720-1: Zstandard vulnerabilities

9 November 2022

Zstandard could be made to expose sensitive information

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Releases

Packages

  • libzstd - fast lossless compression algorithm

Details

It was discovered that Zstandard was not properly managing file
permissions when generating output files. A local attacker could
possibly use this issue to cause a race condition and gain
unauthorized access to sensitive data.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04

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

Related notices

  • USN-4760-1: libzstd1, zstd, libzstd1-udeb, libzstd-dev, libzstd1-dev, libzstd