Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : linux-aws, linux-aws-hwe vulnerability (USN-4096-1)
High Nessus Plugin ID 127891
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionAndrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected packages.