Please Install the Updated Packages.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes: * a NULL pointer dereference flaw was found in the Linux kernel NFSv4 implementation. Several of the NFSv4 file locking functions failed to check whether a file had been opened on the server before performing locking operations on it. A local, unprivileged user on a system with an NFSv4 share mounted could possibly use this flaw to cause a kernel panic (denial of service) or escalate their privileges. (CVE-2009-3726, Important) * a flaw was found in the sctp_process_unk_param() function in the Linux kernel Stream Control Transmission Protocol (SCTP) implementation. A remote attacker could send a specially-crafted SCTP packet to an SCTP listening port on a target system, causing a kernel panic (denial of service). (CVE-2010-1173, Important) * a race condition between finding a keyring by name and destroying a freed keyring was found in the Linux kernel key management facility. A local, unprivileged user could use this flaw to cause a kernel panic (denial of service) or escalate their privileges. (CVE-2010-1437, Important) Red Hat would like to thank Simon Vallet for responsibly reporting CVE-2009-3726 and Jukka Taimisto and Olli Jarva of Codenomicon Ltd, Nokia Siemens Networks, and Wind River on behalf of their customer, for responsibly reporting CVE-2010-1173. Bug fixes: * RHBA-2007:0791 introduced a regression in the Journaling Block Device (JBD). Under certain circumstances, removing a large file (such as 300 MB or more) did not result in inactive memory being freed, leading to the system having a large amount of inactive memory. Now, the memory is correctly freed. (BZ#589155) * the timer_interrupt() routine did not scale lost real ticks to logical ticks correctly, possibly causing time drift for 64-bit Red Hat Enterprise Linux 4 KVM (Kernel-based Virtual Machine) guests that were booted with the &quot divider=x&quot kernel parameter set to a value greater than 1. &quot warning: many lost ticks&quot messages may have been logged on the affected guest systems. (BZ#590551) * a bug could have prevented NFSv3 clients from having the most up-to-date file attributes for files on a given NFSv3 file system. In cases where a file type changed, such as if a file was removed and replaced with a directory of the same name, the NFSv3 client may not have noticed this change until stat(2) was ca ... Description truncated, for more information please check the Reference URL

kernel on Red Hat Enterprise Linux AS version 4, Red Hat Enterprise Linux ES version 4, Red Hat Enterprise Linux WS version 4

• https://www.redhat.com/archives/rhsa-announce/2010-June/msg00009.html

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Updated on 2015-03-25