[RHSA-2009:0451-02] 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-2009:0451-02

Product: Red Hat Enterprise MRG for RHEL-5

Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-0451.html

Issue date: 2009-04-29

CVE Names: CVE-2008-4307 CVE-2009-0028 CVE-2009-0834

CVE-2009-0835 CVE-2009-1046 CVE-2009-1337

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1. Summary:

 

Updated kernel-rt packages that fix several security issues and a bug are

now available for Red Hat Enterprise MRG 1.1.2.

 

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-rt packages contain the Linux kernel, the core of any Linux

operating system.

 

These updated packages fix the following security issues:

 

* a logic error was found in the do_setlk() function of the Linux kernel

Network File System (NFS) implementation. If a signal interrupted a lock

request, the local POSIX lock was incorrectly created. This could cause a

denial of service on the NFS server if a file descriptor was closed before

its corresponding lock request returned. (CVE-2008-4307, Important)

 

* a deficiency was found in the Linux kernel system call auditing

implementation on 64-bit systems. This could allow a local, unprivileged

user to circumvent a system call audit configuration, if that configuration

filtered based on the "syscall" number or arguments.

(CVE-2009-0834, Important)

 

* Chris Evans reported a deficiency in the Linux kernel secure-computing

implementation on 64-bit systems. This could allow a local, unprivileged

user to bypass intended access restrictions, if those access restriction

filters were based on the "syscall" number or arguments.

(CVE-2009-0835, Important)

 

* the exit_notify() function in the Linux kernel did not properly reset the

exit signal if a process executed a set user ID (setuid) application before

exiting. This could allow a local, unprivileged user to elevate their

privileges. (CVE-2009-1337, Important)

 

* Chris Evans reported a deficiency in the Linux kernel signals

implementation. The clone() system call permits the caller to indicate the

signal it wants to receive when its child exits. When clone() is called

with the CLONE_PARENT flag, it permits the caller to clone a new child that

shares the same parent as itself, enabling the indicated signal to be sent

to the caller's parent (instead of the caller), even if the caller's parent

has different real and effective user IDs. This could lead to a denial of

service of the parent. (CVE-2009-0028, Moderate)

 

* an off-by-two error was found in the set_selection() function of the

Linux kernel. This could allow a local, unprivileged user to cause a denial

of service when making a selection of characters in a UTF-8 console. Note:

physical console access is required to exploit this issue.

(CVE-2009-1046, Low)

 

These updated packages also fix the following bug:

 

* the __scsi_device_lookup_by_target() function was always returning the

first matching device, regardless of the state of the device. This meant

that any valid device listed after a deleted device would not be found. The

__scsi_device_lookup_by_target() function was modified so that deleted

devices are skipped, and valid devices are now found. (BZ#495976)

 

All Red Hat Enterprise MRG users should install this update, which resolves

these issues. 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/):

 

456282 - CVE-2008-4307 Kernel BUG() in locks_remove_flock

479932 - CVE-2009-0028 Linux kernel minor signal handling vulnerability

487255 - CVE-2009-0835 kernel: x86-64: seccomp: 32/64 syscall hole

487990 - CVE-2009-0834 kernel: x86-64: syscall-audit: 32/64 syscall hole

491787 - CVE-2009-1046 kernel: utf8 selection memory corruption

493771 - CVE-2009-1337 kernel: exit_notify: kill the wrong capable(CAP_KILL) check

 

6. Package List:

 

MRG Realtime for RHEL 5 Server:

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG/SRPMS/kernel-rt-2.6.24.7-111.el5rt.src.rpm

 

i386:

kernel-rt-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-debug-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-debug-debuginfo-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-debug-devel-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-debuginfo-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-debuginfo-common-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-devel-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-trace-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-trace-debuginfo-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-trace-devel-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-vanilla-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-111.el5rt.i686.rpm

kernel-rt-vanilla-devel-2.6.24.7-111.el5rt.i686.rpm

 

noarch:

kernel-rt-doc-2.6.24.7-111.el5rt.noarch.rpm

 

x86_64:

kernel-rt-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-debug-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-debug-debuginfo-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-debug-devel-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-debuginfo-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-debuginfo-common-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-devel-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-trace-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-trace-debuginfo-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-trace-devel-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-vanilla-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-111.el5rt.x86_64.rpm

kernel-rt-vanilla-devel-2.6.24.7-111.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-2008-4307

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0028

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0834

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0835

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1046

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1337

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

 

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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