Synopsis:	Important: kernel security and bug fix update
Issue date:	2008-12-16
CVE Names:	CVE-2008-4210 CVE-2008-3275 CVE-2008-0598
                   CVE-2008-2136 CVE-2008-2812 CVE-2007-6063
                   CVE-2008-3525

This update addresses the following security issues:

* Tavis Ormandy discovered a deficiency in the Linux kernel 32-bit and
64-bit emulation. This could allow a local, unprivileged user to prepare
and run a specially-crafted binary which would use this deficiency to leak
uninitialized and potentially sensitive data. (CVE-2008-0598, Important)

* a possible kernel memory leak was found in the Linux kernel Simple
Internet Transition (SIT) INET6 implementation. This could allow a local,
unprivileged user to cause a denial of service. (CVE-2008-2136, Important)

* missing capability checks were found in the SBNI WAN driver which could
allow a local user to bypass intended capability restrictions.
(CVE-2008-3525, Important)

* the do_truncate() and generic_file_splice_write() functions did not clear
the setuid and setgid bits. This could allow a local, unprivileged user to
obtain access to privileged information. (CVE-2008-4210, Important)

* a buffer overflow flaw was found in Integrated Services Digital Network
(ISDN) subsystem. A local, unprivileged user could use this flaw to cause a
denial of service. (CVE-2007-6063, Moderate)

* multiple NULL pointer dereferences were found in various Linux kernel
network drivers. These drivers were missing checks for terminal validity,
which could allow privilege escalation. (CVE-2008-2812, Moderate)

* a deficiency was found in the Linux kernel virtual filesystem (VFS)
implementation. This could allow a local, unprivileged user to attempt file
creation within deleted directories, possibly causing a denial of service.
(CVE-2008-3275, Moderate)

This update also fixes the following bugs:

* the incorrect kunmap function was used in nfs_xdr_readlinkres. kunmap()
was used where kunmap_atomic() should have been. As a consequence, if an
NFSv2 or NFSv3 server exported a volume containing a symlink which included
a path equal to or longer than the local system's PATH_MAX, accessing the
link caused a kernel oops. This has been corrected in this update.

* mptctl_gettargetinfo did not check if pIoc3 was NULL before using it as a
pointer. This caused a kernel panic in mptctl_gettargetinfo in some
circumstances. A check has been added which prevents this.

* lost tick compensation code in the timer interrupt routine triggered
without apparent cause. When running as a fully-virtualized client, this
spurious triggering caused the 64-bit version of Red Hat Enterprise Linux 3
to present highly inaccurate times. With this update the lost tick
compensation code is turned off when the operating system is running as a
fully-virtualized client under Xen or VMWare®.

SL 3.0.x

     SRPMS:
kernel-2.4.21-58.EL.src.rpm
     i386:
kernel-2.4.21-58.EL.athlon.rpm
kernel-2.4.21-58.EL.i686.rpm
kernel-BOOT-2.4.21-58.EL.i386.rpm
kernel-doc-2.4.21-58.EL.i386.rpm
kernel-hugemem-2.4.21-58.EL.i686.rpm
kernel-hugemem-unsupported-2.4.21-58.EL.i686.rpm
kernel-smp-2.4.21-58.EL.athlon.rpm
kernel-smp-2.4.21-58.EL.i686.rpm
kernel-smp-unsupported-2.4.21-58.EL.athlon.rpm
kernel-smp-unsupported-2.4.21-58.EL.i686.rpm
kernel-source-2.4.21-58.EL.i386.rpm
kernel-unsupported-2.4.21-58.EL.athlon.rpm
kernel-unsupported-2.4.21-58.EL.i686.rpm
   Dependancies:
kernel-module-openafs-2.4.21-57.EL-1.2.13-15.17.SL.athlon.rpm
kernel-module-openafs-2.4.21-57.EL-1.2.13-15.17.SL.i686.rpm
kernel-module-openafs-2.4.21-57.ELsmp-1.2.13-15.17.SL.athlon.rpm
kernel-module-openafs-2.4.21-57.ELsmp-1.2.13-15.17.SL.i686.rpm

     x86_64:
kernel-2.4.21-58.EL.ia32e.rpm
kernel-2.4.21-58.EL.x86_64.rpm
kernel-doc-2.4.21-58.EL.x86_64.rpm
kernel-smp-2.4.21-58.EL.x86_64.rpm
kernel-smp-unsupported-2.4.21-58.EL.x86_64.rpm
kernel-source-2.4.21-58.EL.x86_64.rpm
kernel-unsupported-2.4.21-58.EL.ia32e.rpm
kernel-unsupported-2.4.21-58.EL.x86_64.rpm
   Dependancies:
kernel-module-openafs-2.4.21-57.EL-1.2.13-15.17.SL.ia32e.rpm
kernel-module-openafs-2.4.21-57.EL-1.2.13-15.17.SL.x86_64.rpm
kernel-module-openafs-2.4.21-57.ELsmp-1.2.13-15.17.SL.x86_64.rpm

-Connie Sieh
-Troy Dawson