kernel security update

CentOS Errata and Security Advisory CESA-2006:0579-01

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 the USB devio handling of device removal that allowed a local
  user to cause a denial of service (crash) (CVE-2005-3055, moderate)

• a flaw in ROSE due to missing verification of the ndigis argument of new
  routes (CVE-2005-3273, moderate)

• an info leak on AMD-based x86 systems that allowed a local user to
  retrieve the floating point exception state of a process run by a different
  user (CVE-2006-1056, important)

• a minor info leak in socket name handling in the network code
  (CVE-2006-1342, low)

• a minor info leak in socket option handling in the network code
  (CVE-2006-1343, low)

• a directory traversal vulnerability in smbfs that allowed a local user to
  escape chroot restrictions for an SMB-mounted filesystem via “…\”
  sequences (CVE-2006-1864, moderate)

• a flaw in the mprotect system call that allowed to give write permission
  to a readonly attachment of shared memory (CVE-2006-2071, moderate)

A performance bug in the NFS implementation that caused clients to
frequently pause when sending TCP segments during heavy write loads was
also addressed.

All Red Hat Enterprise Linux 2.1 users are advised to upgrade their kernels
to these updated packages, which contain backported fixes to correct these
issues.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2006-July/075184.html

Affected packages:
kernel
kernel-BOOT
kernel-debug
kernel-doc
kernel-enterprise
kernel-headers
kernel-smp
kernel-source
kernel-summit