Important: linuxptp

Issue Overview:

A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-3570)

Affected Packages:

linuxptp

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 linuxptp to update your system.

New Packages:

aarch64:  
    linuxptp-2.0-2.amzn2.1.aarch64  
    linuxptp-debuginfo-2.0-2.amzn2.1.aarch64  
  
i686:  
    linuxptp-2.0-2.amzn2.1.i686  
    linuxptp-debuginfo-2.0-2.amzn2.1.i686  
  
src:  
    linuxptp-2.0-2.amzn2.1.src  
  
x86_64:  
    linuxptp-2.0-2.amzn2.1.x86_64  
    linuxptp-debuginfo-2.0-2.amzn2.1.x86_64  

Additional References

Red Hat: CVE-2021-3570

Mitre: CVE-2021-3570