Spice could be made to crash or run programs.
Frediano Ziglio discovered multiple buffer overflows, undefined behavior signed integer operations, race conditions, memory leaks, and denial of service issues in Spice. A malicious guest operating system could potentially exploit these issues to escape virtualization. (CVE-2015-5260, CVE-2015-5261)
7 October 2015
A security issue affects these releases of Ubuntu and its derivatives:
Spice could be made to crash or run programs.
Frediano Ziglio discovered multiple buffer overflows, undefined behavior signed integer operations, race conditions, memory leaks, and denial of service issues in Spice. A malicious guest operating system could potentially exploit these issues to escape virtualization. (CVE-2015-5260, CVE-2015-5261)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart qemu guests to make all the necessary changes.
Vulmon