Important: libX11

Issue Overview:

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability. (CVE-2020-14363)

Affected Packages:

libX11

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update libX11 to update your system.

New Packages:

aarch64:  
    libX11-1.6.7-3.amzn2.aarch64  
    libX11-devel-1.6.7-3.amzn2.aarch64  
    libX11-debuginfo-1.6.7-3.amzn2.aarch64  
  
i686:  
    libX11-1.6.7-3.amzn2.i686  
    libX11-devel-1.6.7-3.amzn2.i686  
    libX11-debuginfo-1.6.7-3.amzn2.i686  
  
noarch:  
    libX11-common-1.6.7-3.amzn2.noarch  
  
src:  
    libX11-1.6.7-3.amzn2.src  
  
x86_64:  
    libX11-1.6.7-3.amzn2.x86_64  
    libX11-devel-1.6.7-3.amzn2.x86_64  
    libX11-debuginfo-1.6.7-3.amzn2.x86_64  

Additional References

Red Hat: CVE-2020-14363

Mitre: CVE-2020-14363