A vulnerability that has been discovered in the Linux kernel affecting the Ubuntu 13.04 (Raring Ringtail) operating system, has been announced by Canonical.
According to Canonical
, the system could have been made to crash or run programs, as an administrator, if it received specially crafted network traffic.
A flaw has been discovered in the Linux kernel's iSCSI subsystem. A remote unauthenticated attacker could exploit this flaw to cause a denial of service (system crash), or to potentially gain administrative privileges.
The security flaws can be fixed if you upgrade your system(s) to the vlinux-image-3.8.0-23-generic (3.8.0-23.34).
Don't forget to reboot your computer after the upgrade!
Due to an unavoidable ABI change, the kernel packages have a new version number, which will force you to reinstall and recompile all third-party kernel modules you might have installed. Moreover, if you use the linux-restricted-modules package, you have to update it as well to get modules that work with the new Linux kernel version.