| Description: | The kernel packages contain the Linux kernel, the core of any Linuxoperating system.* A flaw was found in the way the Linux kernel handled GS segment registerbase switching when recovering from a #SS (stack segment) fault on anerroneous return to user space. A local, unprivileged user could use thisflaw to escalate their privileges on the system. (CVE-2014-9322, Important)* A flaw was found in the way the Linux kernel's SCTP implementationhandled malformed or duplicate Address Configuration Change Chunks(ASCONF). A remote attacker could use either of these flaws to crash thesystem. (CVE-2014-3673, CVE-2014-3687, Important)* A flaw was found in the way the Linux kernel's SCTP implementationhandled the association's output queue. A remote attacker could sendspecially crafted packets that would cause the system to use an excessiveamount of memory, leading to a denial of service. (CVE-2014-3688,Important)* A stack overflow flaw caused by infinite recursion was found in the waythe Linux kernel's UDF file system implementation processed indirect ICBs.An attacker with physical access to the system could use a speciallycrafted UDF image to crash the system. (CVE-2014-6410, Low)* It was found that the Linux kernel's networking implementation did notcorrectly handle the setting of the keepalive socket option on raw sockets.A local user able to create a raw socket could use this flaw to crash thesystem. (CVE-2012-6657, Low)* It was found that the parse_rock_ridge_inode_internal() function of theLinux kernel's ISOFS implementation did not correctly check relocateddirectories when processing Rock Ridge child link (CL) tags. An attackerwith physical access to the system could use a specially crafted ISO imageto crash the system or, potentially, escalate their privileges on thesystem. (CVE-2014-5471, CVE-2014-5472, Low)Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-9322.The CVE-2014-3673 issue was discovered by Liu Wei of Red Hat.Bug fixes:* This update fixes a race condition issue between the sock_queue_err_skbfunction and sk_forward_alloc handling in the socket error queue(MSG_ERRQUEUE), which could occasionally cause the kernel, for example whenusing PTP, to incorrectly track allocated memory for the error queue, inwhich case a traceback would occur in the system log. (BZ#1155427)* The zcrypt device driver did not detect certain crypto cards and therelated domains for crypto adapters on System z and s390x architectures.Consequently, it was not possible to run the system on new crypto hardware.This update enables toleration mode for such devices so that the systemcan make use of newer crypto hardware. (BZ#1158311)* After mounting and unmounting an XFS file system several timesconsecutively, the umount command occasionally became unresponsive.This was caused by the xlog_cil_force_lsn() function that was not waitingfor completion as expected. With this update, xlog_cil_force_lsn() has beenmodified to correctly wait for completion, thus fixing this bug.(BZ#1158325)* When using the ixgbe adapter with disabled LRO and the tx-usec or rs-usecvariables set to 0, transmit interrupts could not be set lower than thedefault of 8 buffered tx frames. Consequently, a delay of TCP transferoccurred. The restriction of a minimum of 8 buffered frames has beenremoved, and the TCP delay no longer occurs. (BZ#1158326)* The offb driver has been updated for the QEMU standard VGA adapter,fixing an incorrect displaying of colors issue. (BZ#1158328)* Under certain circumstances, when a discovered MTU expired, the IPv6connection became unavailable for a short period of time. This bug has beenfixed, and the connection now works as expected. (BZ#1161418)* A low throughput occurred when using the dm-thin driver to write tounprovisioned or shared chunks for a thin pool with the chunk size biggerthan the max_sectors_kb variable. (BZ#1161420)* Large write workloads on thin LVs could cause the iozone and smallfileutilities to terminate unexpectedly. (BZ#1161421) |