USN-5375-1: GNU cflow vulnerability

Publication date

12 April 2022

Overview

GNU cflow could be made to crash or run programs if it received specially crafted input.


Packages

  • cflow - Analyze control flow in C source files

Details

It was discovered that GNU cflow was incorrectly handling memory cleanup
operations at the end of a compilation module. An attacker could possibly
use this issue to cause a denial of service or execute arbitrary code.

It was discovered that GNU cflow was incorrectly handling memory cleanup
operations at the end of a compilation module. An attacker could possibly
use this issue to cause a denial of service or execute arbitrary code.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
18.04 LTS bionic cflow –  1:1.4+dfsg1-3ubuntu1.18.04.1~esm1  
16.04 LTS xenial cflow –  1:1.4+dfsg1-3ubuntu1.16.04.1~esm1  

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