| Description: | The kernel packages contain the Linux kernel, the core of any Linuxoperating system.* An out-of-bounds memory access flaw was found in the Linux kernel'ssystem call auditing implementation. On a system with existing audit rulesdefined, a local, unprivileged user could use this flaw to leak kernelmemory to user space or, potentially, crash the system. (CVE-2014-3917,Moderate)This update also fixes the following bugs: * A bug in the mtip32xx driver could prevent the Micron P420m PCIe SSDdevices with unaligned I/O access from completing the submitted I/Orequests. This resulted in a livelock situation and rendered the MicronP420m PCIe SSD devices unusable. To fix this problem, mtip32xx now checkswhether an I/O access is unaligned and if so, it uses the correctsemaphore. (BZ#1125776)* A series of patches has been backported to improve the functionality ofa touch pad on the latest Lenovo laptops in Red Hat Enterprise Linux 7.(BZ#1122559)* Due to a bug in the bnx2x driver, a network adapter could be unable torecover from EEH error injection. The network adapter had to be takenoffline and rebooted in order to function properly again. With this update,the bnx2x driver has been corrected and network adapters now recover fromEEH errors as expected. (BZ#1107722)* Previously, if an hrtimer interrupt was delayed, all future pendinghrtimer events that were queued on the same processor were also delayeduntil the initial hrtimer event was handled. This could cause all hrtimerprocessing to stop for a significant period of time. To prevent thisproblem, the kernel has been modified to handle all expired hrtimer eventswhen handling the initially delayed hrtimer event. (BZ#1113175)* A previous change to the nouveau driver introduced a bit shift error,which resulted in a wrong display resolution being set with some modelsof NVIDIA controllers. With this update, the erroneous code has beencorrected, and the affected NVIDIA controllers can now set the correctdisplay resolution. (BZ#1114869)* Due to a NULL pointer dereference bug in the be2net driver, the systemcould experience a kernel oops and reboot when disabling a network adapterafter a permanent failure. This problem has been fixed by introducing aflag to keep track of the setup state. The failing adapter can now bedisabled successfully without a kernel crash. (BZ#1122558)* Previously, the Huge Translation Lookaside Buffer (HugeTLB) allowedaccess to huge pages access by default. However, huge pages may beunsupported in some environments, such as a KVM guest on a PowerPCarchitecture, and an attempt to access a huge page in memory would resultin a kernel oops. This update ensures that HugeTLB denies access to hugepages if the huge pages are not supported on the system. (BZ#1122115)* If an NVMe device becomes ready but fails to create I/O queues, the nvmedriver creates a character device handle to manage such a device.Previously, a character device could be created before a device referencecounter was initialized, which resulted in a kernel oops. This problem hasbeen fixed by calling the relevant initialization function earlier in thecode. (BZ#1119720)* On some firmware versions of the BladeEngine 3 (BE3) controller,interrupts remain disabled after a hardware reset. This was a problem forall Emulex-based network adapters using such a BE3 controller becausethese adapters would fail to recover from an EEH error if it occurred. Toresolve this problem, the be2net driver has been modified to enable theinterrupts in the eeh_resume handler explicitly. (BZ#1121712)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. |