The kernel packages contain the Linux kernel, the core of any Linux
- A flaw was found in the way the pppol2tp_setsockopt() and
pppol2tp_getsockopt() functions in the Linux kernel's PPP over L2TP
implementation handled requests with a non-SOL_PPPOL2TP socket option
level. A local, unprivileged user could use this flaw to escalate their
privileges on the system. (CVE-2014-4943, Important)
Red Hat would like to thank Sasha Levin for reporting this issue.
This update also fixes the following bug:
- When a device was registered to a bus, a race condition could occur
between the device being added to the list of devices of the bus and
binding the device to a driver. As a result, the device could already be
bound to a driver which led to a warning and incorrect reference counting,
and consequently to a kernel panic on device removal. To avoid the race
condition, this update adds a check to identify an already bound device.
All kernel users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. The system must be
rebooted for this update to take effect.