REVISION HISTORY:
9/28/2007 - revised R-348 to add a link to Debian Security Advisory DSA-1378-1
            for Debian GNU/Linux 4.0 (etch).
11/09/2007 - revised R-348 to add a link to Red Hat RHSA-2007:0939-10 for Red Hat 
             Desktop (v. 4), Enterprise Linux AS, ES, WS (v. 4).
12/07/2007 - revised R-348 to add a link to Red Hat RHSA-2007:1049-8 for Red Hat 
             Desktop (v. 3), Enterprise Linux AS, ES, WS (v. 3).
01/30/2008 - revised R-348 to add a link to Debian Security Advisory DSA-1479-1 for
             Debian GNU/Linux 4.0 (etch).

			
			
			
[***** Start Red Hat RHSA-2007:0705-2 *****]

Updated kernel packages that fix various security issues in the Red Hat
Enterprise Linux 5 kernel are now available.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

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

These new kernel packages contain fixes for the following security issues:

* a flaw in the DRM driver for Intel graphics cards that allowed a local
user to access any part of the main memory. To access the DRM functionality
a user must have access to the X server which is granted through the
graphical login. This also only affected systems with an Intel 965 or later
graphic chipset. (CVE-2007-3851, Important)

* a flaw in the VFAT compat ioctl handling on 64-bit systems that allowed a
local user to corrupt a kernel_dirent struct and cause a denial of service
(system crash). (CVE-2007-2878, Important)

* a flaw in the connection tracking support for SCTP that allowed a remote
user to cause a denial of service by dereferencing a NULL pointer.
(CVE-2007-2876, Important)

* flaw in the CIFS filesystem which could cause the umask values of a
process to not be honored. This affected CIFS filesystems where the Unix
extensions are supported. (CVE-2007-3740, Important)

* a flaw in the stack expansion when using the hugetlb kernel on PowerPC
systems that allowed a local user to cause a denial of service.
(CVE-2007-3739, Moderate)

* a flaw in the ISDN CAPI subsystem that allowed a remote user to cause a
denial of service or potential remote access. Exploitation would require
the attacker to be able to send arbitrary frames over the ISDN network to
the victim's machine. (CVE-2007-1217, Moderate)

* a flaw in the cpuset support that allowed a local user to obtain
sensitive information from kernel memory. To exploit this the cpuset
filesystem would have to already be mounted. (CVE-2007-2875, Moderate)

* a flaw in the CIFS handling of the mount option "sec=" that didn't enable
integrity checking and didn't produce any error message. (CVE-2007-3843,
Low)

Red Hat Enterprise Linux 5 users are advised to upgrade to these packages,
which contain backported patches to correct these issues.

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

232260 - CVE-2007-1217 Overflow in CAPI subsystem
245773 - CVE-2007-2875 cpuset information leak
245774 - CVE-2007-2876 {ip, nf}_conntrack_sctp: remotely triggerable NULL ptr dereference
247726 - CVE-2007-2878 VFAT compat ioctls DoS on 64-bit
251185 - CVE-2007-3851 i965 DRM allows insecure packets
253313 - CVE-2007-3739 LTC36188-Don't allow the stack to grow into hugetlb reserved regions
253314 - CVE-2007-3740 CIFS should honor umask
253315 - CVE-2007-3843 CIFS signing sec= mount options don't work correctly

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1217
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2875
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2876
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2878
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3739
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3740
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3843
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3851
http://www.redhat.com/security/updates/classification/#important

[***** End Red Hat RHSA-2007:0705-2 *****]

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