Please Install the Updated Packages.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fix: * a NULL pointer dereference flaw was found in the Multiple Devices (md) driver in the Linux kernel. If the &quot suspend_lo&quot or &quot suspend_hi&quot file on the sysfs file system (&quot /sys/&quot ) is modified when the disk array is inactive, it could lead to a local denial of service or privilege escalation. Note: By default, only the root user can write to the files mentioned above. (CVE-2009-2849, Moderate) Bug fixes: * a bug in nlm_lookup_host() could lead to un-reclaimed locks on file systems, resulting in umount failing and NFS service relocation issues for clusters. (BZ#517967) * a bug in the sky2 driver prevented the phy from being reset properly on some hardware when it hanged, preventing a link from coming back up. (BZ#517976) * disabling MSI-X for qla2xxx also disabled MSI interrupts. (BZ#519782) * performance issues with reads when using the qlge driver on PowerPC systems. A system hang could also occur during reboot. (BZ#519783) * unreliable time keeping for Red Hat Enterprise Linux virtual machines. The KVM pvclock code is now used to detect/correct lost ticks. (BZ#520685) * /proc/cpuinfo was missing flags for new features in supported processors, possibly preventing the operating system and applications from getting the best performance. (BZ#520686) * reading/writing with a serial loopback device on a certain IBM system did not work unless booted with &quot pnpacpi=off&quot . (BZ#520905) * mlx4_core failed to load on systems with more than 32 CPUs. (BZ#520906) * on big-endian platforms, interfaces using the mlx4_en driver and Large Receive Offload (LRO) did not handle VLAN traffic properly (a segmentation fault in the VLAN stack in the kernel occurred). (BZ#520908) * due to a lock being held for a long time, some systems may have experienced &quot BUG: soft lockup&quot messages under very heavy load. (BZ#520919) * incorrect APIC timer calibration may have caused a system hang during boot, as well as the system time becoming faster or slower. A warning is now provided. (BZ#521238) * a Fibre Channel device re-scan via 'echo &quot ---&quot &gt /sys/class/scsi_host/ host[x]/scan' may not complete after hot adding a drive, leading to soft lockups (&quot BUG: soft lockup detected&quot ). (BZ#521239) * the Broadcom BCM5761 network device was unable to be initialized properly therefore, the associated interface could not obtain an IP address via DHCP, ... Description truncated, for more information please check the Reference URL

kernel on CentOS 5

• http://lists.centos.org/pipermail/centos-announce/2009-October/016235.html

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Updated on 2015-03-25