The patch was released in early April 2020 and provides updated Third-Party packages that fix security vulnerabilities. The patch can be downloaded from here.
Veritas Principal Product Manager --- SDS/Appliances
I tried to apply this to a 5230 we just upgraded to 3.1.2/8.1.2 and the installation failed due to /boot not having enough free space. Haven't had much time to troubleshoot it, but would appreciate any guidance on how to resolve that and why it occurred.
PS: Installed other critical EEBs without issue, this was the only one that failed.
As mentioned in the Release Notes, accompanying the patch, at least 500 MB of space in /boot partition is required to install the patch. Please check your /boot partition.