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USN-4760-1: libzstd vulnerabilities

8 March 2021

libzstd could be made to expose sensitive information.



  • libzstd - fast lossless compression algorithm


It was discovered that libzstd incorrectly handled file permissions. A
local attacker could possibly use this issue to access certain files,
contrary to expectations.

Update instructions

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

Ubuntu 20.10
Ubuntu 20.04
Ubuntu 18.04

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