(RHSA-2014:0949) Important: kernel security update

2014-07-28T04:00:00
ID RHSA-2014:0949
Type redhat
Reporter RedHat
Modified 2015-04-24T14:17:48

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

  • It was found that the Linux kernel's ptrace subsystem allowed a traced process' instruction pointer to be set to a non-canonical memory address without forcing the non-sysret code path when returning to user space. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-4699, Important)

Note: The CVE-2014-4699 issue only affected systems using an Intel CPU.

Red Hat would like to thank Andy Lutomirski for reporting this issue.

All kernel users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.