Debian security advisory published a new update for computers running the Linux operating system,Several vulnerability has been found in Linux kernel ,Futex subsystem, may lead to a DDoS or privilege escalation.
Debian security advisory recomend upgrade your linux packages( version 3.2.57-3+deb7u2) and said problems in Futex subsystem have been fixed.
Linux kernel flaw
CVE-2014-3144 CVE-2014-3145 CVE-2014-3153
Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service or privilege escalation:
CVE-2014-3144 / CVE-2014-3145
A local user can cause a denial of service (system crash) via
crafted BPF instructions.