[RHSA-2009:0053-01] Important: kernel-rt security and bug fix update

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Red Hat Security Advisory

 

Synopsis: Important: kernel-rt security and bug fix update

Advisory ID: RHSA-2009:0053-01

Product: Red Hat Enterprise MRG for RHEL-5

Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-0053.html

Issue date: 2009-02-04

CVE Names: CVE-2008-5079 CVE-2008-5134 CVE-2008-5182

CVE-2008-5300 CVE-2008-5700 CVE-2009-0065

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix several security issues and several bugs

are now available for Red Hat Enterprise MRG 1.1.

 

This update has been rated as having important security impact by the Red

Hat Security Response Team.

 

2. Relevant releases/architectures:

 

MRG Realtime for RHEL 5 Server - i386, noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

These updated packages address the following security issues:

 

* a flaw was found in the Asynchronous Transfer Mode (ATM) subsystem. A

local, unprivileged user could use the flaw to listen on the same socket

more than once, possibly causing a denial of service. (CVE-2008-5079,

Important)

 

* a buffer overflow flaw was found in the libertas driver. This could,

potentially, lead to a remote denial of service when an invalid beacon or

probe response was received. (CVE-2008-5134, Important)

 

* a race condition was found in the Linux kernel "inotify" watch removal

and umount implementation. This could allow a local, unprivileged user

to cause a privilege escalation or a denial of service. (CVE-2008-5182,

Important)

 

* the sendmsg() function in the Linux kernel did not block during UNIX

socket garbage collection. This could, potentially, lead to a local denial

of service. (CVE-2008-5300, Important)

 

* a buffer overflow was found in the Linux kernel Partial Reliable Stream

Control Transmission Protocol (PR-SCTP) implementation. This could,

potentially, lead to a denial of service if a Forward-TSN chunk is received

with a large stream ID. (CVE-2009-0065, Important)

 

* a deficiency was found in the libATA implementation. This could,

potentially, lead to a denial of service. By default, the "/dev/sg*"

devices are accessible only to the root user. (CVE-2008-5700, Low)

 

These updated packages also address numerous bugs, including the following:

 

* a race condition caused the timer to stop responding. This was fixed by

correcting the behavior of the alloc_posix_timer() function.

 

* the kernel was behaving differently for varying file capabilities. This

was resolved by ensuring the get_file_caps() function was preceded by

clearing bprm->caps_*.

 

* a check was included on the limit of the shadow.bytes array, to prevent

value outside the limits being written and over riding other data areas.

 

* the kernel-rt-2.6.24.7-81.el5rt kernel displayed a warning on boot

stating that the hwclock failed. This was due to a compatibility problem

with the Red Hat Enterprise Linux 5 file system. It was resolved by adding

a new udev rule that ensured /dev was set up correctly.

 

* the GPS clock daemon was becoming unstable due to a problem in adjtimex.

The issue was located and corrected.

 

* the events_trace tracer was providing bad parameters to syscalls on i386

machines. This was due to the sys_call interface needing to use the

assembly linked annotation and the edx register being used before it was

stored on the stack. Both these issues were corrected.

 

All Red Hat Enterprise MRG users should install this update which addresses

these vulnerabilities and fixes these bugs. For this update to take effect,

the system must be rebooted.

 

4. Solution:

 

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/docs/DOC-11259

 

5. Bugs fixed (http://bugzilla.redhat.com/):

 

470758 - kernel: file caps: always start with clear bprm->caps_*

470761 - CVE-2008-5134 kernel: libertas: fix buffer overrun

471835 - kernel: V4L/DVB (9621): Avoid writing outside shadow.bytes[] array

472277 - CRM 1871016 adjtimex causing instability on GPS clock daemon

472325 - CVE-2008-5182 kernel: fix inotify watch removal/umount races

473259 - CVE-2008-5300 kernel: fix soft lockups/OOM issues with unix socket garbage collector

473696 - CVE-2008-5079 Linux Kernel 'atm module' Local Denial of Service

474495 - CVE-2008-5700 kernel: enforce a minimum SG_IO timeout

474683 - event trace syscall on i386 has bogus parameters

478800 - CVE-2009-0065 kernel: sctp: memory overflow when FWD-TSN chunk is received with bad stream ID

 

6. Package List:

 

MRG Realtime for RHEL 5 Server:

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG/SRPMS/kernel-rt-2.6.24.7-101.el5rt.src.rpm

 

i386:

kernel-rt-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-debug-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-debug-debuginfo-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-debug-devel-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-debuginfo-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-debuginfo-common-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-devel-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-trace-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-trace-debuginfo-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-trace-devel-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-vanilla-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-101.el5rt.i686.rpm

kernel-rt-vanilla-devel-2.6.24.7-101.el5rt.i686.rpm

 

noarch:

kernel-rt-doc-2.6.24.7-101.el5rt.noarch.rpm

 

x86_64:

kernel-rt-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-debug-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-debug-debuginfo-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-debug-devel-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-debuginfo-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-debuginfo-common-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-devel-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-trace-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-trace-debuginfo-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-trace-devel-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-vanilla-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-101.el5rt.x86_64.rpm

kernel-rt-vanilla-devel-2.6.24.7-101.el5rt.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://www.redhat.com/security/team/key/#package

 

7. References:

 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5079

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5134

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5182

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5300

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5700

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0065

http://www.redhat.com/security/updates/classification/#important

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.1/html/MRG_Release_Notes/

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://www.redhat.com/security/team/contact/

 

Copyright 2009 Red Hat, Inc.

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