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USN-4338-2: re2c vulnerability

28 April 2020

re2c could be made to execute arbitrary code if it received a specially crafted file.



  • re2c - tool for generating fast C-based recognizers


USN-4338-1 fixed vulnerabilities in re2c. This update provides
the corresponding update for Ubuntu 20.04 LTS.

Original advisory details:

Agostino Sarubbo discovered that re2c incorrectly handled certain files.
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 20.04

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


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