kernel security update

CentOS Errata and Security Advisory CESA-2006:0140

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the security issues
described below:

• a flaw in network IGMP processing that a allowed a remote user on the
  local network to cause a denial of service (disabling of multicast reports)
  if the system is running multicast applications (CVE-2002-2185, moderate)

• a flaw in remap_page_range() with O_DIRECT writes that allowed a local
  user to cause a denial of service (crash) (CVE-2004-1057, important)

• a flaw in exec() handling on some 64-bit architectures that allowed
  a local user to cause a denial of service (crash) (CVE-2005-2708, important)

• a flaw in procfs handling during unloading of modules that allowed a
  local user to cause a denial of service or potentially gain privileges
  (CVE-2005-2709, moderate)

• a flaw in IPv6 network UDP port hash table lookups that allowed a local
  user to cause a denial of service (hang) (CVE-2005-2973, important)

• a flaw in 32-bit-compat handling of the TIOCGDEV ioctl that allowed
  a local user to cause a denial of service (crash) (CVE-2005-3044, important)

• a network buffer info leak using the orinoco driver that allowed
  a remote user to possibly view uninitialized data (CVE-2005-3180, important)

• a flaw in IPv4 network TCP and UDP netfilter handling that allowed
  a local user to cause a denial of service (crash) (CVE-2005-3275, important)

• a flaw in the IPv6 flowlabel code that allowed a local user to cause a
  denial of service (crash) (CVE-2005-3806, important)

• a flaw in network ICMP processing that allowed a local user to cause
  a denial of service (memory exhaustion) (CVE-2005-3848, important)

• a flaw in file lease time-out handling that allowed a local user to cause
  a denial of service (log file overflow) (CVE-2005-3857, moderate)

• a flaw in network IPv6 xfrm handling that allowed a local user to
  cause a denial of service (memory exhaustion) (CVE-2005-3858, important)

All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels
to the packages associated with their machine architecture and
configurations as listed in this erratum.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2006-January/074751.html
https://lists.centos.org/pipermail/centos-announce/2006-January/074752.html
https://lists.centos.org/pipermail/centos-announce/2006-January/074755.html
https://lists.centos.org/pipermail/centos-announce/2006-January/074763.html

Affected packages:
kernel
kernel-BOOT
kernel-doc
kernel-hugemem
kernel-hugemem-unsupported
kernel-smp
kernel-smp-unsupported
kernel-source
kernel-unsupported

Upstream details at:
https://access.redhat.com/errata/RHSA-2006:0140