RHSA-2014:1763: Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linuxoperating system. A flaw was found in the way the Linux kernel's futex subsystem handled reference counting when requeuing futexes during futexwait(). A local,unprivileged user could use this flaw to zero out the reference counter ofan inode or an mm struct that backs up the memory area of the futex, whichcould lead to a use-after-free flaw, resulting in a system crash or,potentially, privilege escalation. (CVE-2014-0205) A NULL pointer dereference flaw was found in the way the Linux kernel's Stream Control Transmission Protocol (SCTP) implementation handledsimultaneous connections between the same hosts. A remote attacker coulduse this flaw to crash the system. (CVE-2014-5077)The security impact of the CVE-2014-0205 issue was discovered by MateuszGuzik of Red Hat.All kernel users are advised to upgrade to these updated packages, whichcontain backported patches to correct these issues. The system must berebooted for this update to take effect.