USN-5720-1: Zstandard vulnerabilities
Ubuntu Security Notice USN-5720-1
November 09, 2022
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
Zstandard could be made to expose sensitive information
- libzstd: fast lossless compression algorithm
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.
The problem can be corrected by updating your system to the following
Ubuntu 16.04 ESM:
In general, a standard system update will make all the necessary changes.
A Zstandard security update has been released for Ubuntu Linux 16.04 ESM.