Synopsis
The remote Ubuntu host is missing one or more security-related patches.
Description
Pinkie Pie discovered a flaw in the Linux kernel's futex subsystem. An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or gain administrative privileges.
(CVE-2014-3153)
A flaw was discovered in the vhost-net subsystem of the Linux kernel.
Guest OS users could exploit this flaw to cause a denial of service (host OS crash). (CVE-2014-0055)
Sasha Levin reported a bug in the Linux kernel's virtual memory management subsystem. An unprivileged local user could exploit this flaw to cause a denial of service (system crash). (CVE-2014-3122).
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.
Solution
Update the affected packages.