Ubuntu 15.10 : linux-raspi2 vulnerability (USN-2852-1)
Medium Nessus Plugin ID 87535
SynopsisThe remote Ubuntu host is missing a security-related patch.
DescriptionJann Horn discovered a ptrace issue with user namespaces in the Linux kernel. The namespace owner could potentially exploit this flaw by ptracing a root owned process entering the user namespace to elevate its privileges and potentially gain access outside of the namespace.
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 linux-image-4.2-raspi2 package.