[RHSA-2008:0585-01] Important: kernel security and bug fix update

[news 28]

-----BEGIN PGP SIGNED MESSAGE-----

Hash: SHA1

 

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

Red Hat Security Advisory

 

Synopsis: Important: kernel security and bug fix update

Advisory ID: RHSA-2008:0585-01

Product: Red Hat Enterprise MRG for RHEL-5

Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0585.html

Issue date: 2008-08-26

CVE Names: CVE-2007-5966 CVE-2007-6282 CVE-2007-6712

CVE-2008-1615 CVE-2008-2136 CVE-2008-2148

CVE-2008-2372 CVE-2008-2729 CVE-2008-2826

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

 

1. Summary:

 

Updated kernel packages that fix several security issues and several bugs

are now available for Red Hat Enterprise MRG 1.0.

 

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 fix the following security issues:

 

* the possibility of a timeout value overflow was found in the Linux kernel

high-resolution timers functionality, hrtimer. This could allow a local

unprivileged user to execute arbitrary code, or cause a denial of service

(kernel panic). (CVE-2007-5966, Important)

 

* the possibility of a kernel crash was found in the Linux kernel IPsec

protocol implementation, due to improper handling of fragmented ESP

packets. When an attacker controlling an intermediate router fragmented

these packets into very small pieces, it would cause a kernel crash on the

receiving node during packet reassembly. (CVE-2007-6282, Important)

 

* on 64-bit architectures, the possibility of a timer-expiration value

overflow was found in the Linux kernel high-resolution timers

functionality, hrtimer. This could allow a local unprivileged user to set

up a large interval value, forcing the timer expiry value to become

negative, causing a denial of service (kernel hang).

(CVE-2007-6712, Important)

 

* on AMD64 architectures, the possibility of a kernel crash was discovered

by testing the Linux kernel process-trace ability. This could allow a local

unprivileged user to cause a denial of service (kernel crash).

(CVE-2008-1615, 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)

 

* a flaw was found in the Linux kernel utimensat system call. File

permissions were not checked when UTIME_NOW and UTIME_OMIT combinations

were used. This could allow a local unprivileged user to modify file times

of arbitrary files, possibly leading to a denial of service.

(CVE-2008-2148, Important)

 

* a security flaw was found in the Linux kernel memory copy routines, when

running on certain AMD64 architectures. If an unsuccessful attempt to copy

kernel memory from source to destination memory locations occurred, the

copy routines did not zero the content at the destination memory location.

This could allow a local unprivileged user to view potentially sensitive

data. (CVE-2008-2729, Important)

 

* Gabriel Campana discovered a possible integer overflow flaw in the Linux

kernel Stream Control Transmission Protocol (SCTP) implementation. This

deficiency could lead to privilege escalation. (CVE-2008-2826, Important)

 

* a deficiency was found in the Linux kernel virtual memory implementation.

This could allow a local unprivileged user to make a large number of calls

to the get_user_pages function, possibly causing a denial of service.

(CVE-2008-2372, Low)

 

Also, these updated packages fix the following bugs:

 

* gdb set orig_rax to 0x00000000ffffffff, which is recognized by the

upstream kernel as "-1", but not by the Red Hat Enterprise MRG kernel.

 

* if the POSIX timer was programmed to fire immediately, the timer's

signal was sometimes not delivered (timer does not fire).

 

* rwlock caused crashes and application hangs.

 

* running oprofile caused system panics.

 

* threads releasing a mutex may have received an EPERM error.

 

* booting the RT kernel with the "nmi_watchdog=2" kernel option caused a

kernel panic, and an "Unable to handle kernel paging request" error.

 

* "echo 0 > /sys/devices/system/cpu/cpu1/online" caused crashes.

 

* a crash on a JTC machine.

 

* added a new "FUTEX_WAIT_BITSET" system call, identical to FUTEX_WAIT,

that accepts absolute time as a timeout.

 

Red Hat Enterprise MRG 1.0 users are advised to upgrade to these updated

packages, which contain backported patches to resolve these issues.

 

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/FAQ_58_10188

 

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

 

404291 - CVE-2007-6282 IPSec ESP kernel panics

429290 - provide a futex syscall command similiar to FUTEX_WAIT with takes absolute timeout

431430 - CVE-2008-1615 kernel: ptrace: Unprivileged crash on x86_64 %cs corruption

439999 - CVE-2007-6712 kernel: infinite loop in highres timers (kernel hang)

446031 - CVE-2008-2136 kernel: sit memory leak

446060 - kernel: sched_fair.c simplify sched_slice()

446397 - java testcase hangs on 2.6.24.7-52ibmrt2.3 kernel

446777 - pthread_mutex_unlock returns EPERM due to earlier EFAULT from futex lock

449676 - Turning a CPU offline causes panic

451271 - CVE-2008-2729 kernel: [x86_64] The string instruction version didn't zero the output on exception.

452478 - CVE-2008-2826 kernel: sctp: sctp_getsockopt_local_addrs_old() potential overflow

452666 - CVE-2008-2372 kernel: Reinstate ZERO_PAGE optimization in 'get_user_pages()' and fix XIP

452692 - crash with 2.6.24.7-65.el5rt

452693 - POSIX timer set to fire immediately does not fire

452974 - [24][FOCUS] plist_add/del crash with 2.6.24.7-65ibmrt2.4 kernel

453135 - CVE-2007-5966 Non-root can trigger cpu_idle soft lockup (tickless kernel only)

453677 - nmi_watchdog=2 crashes the RT kernel on boot up

454913 - [Realtime][Kernel] LTP test failure in sched_rr_get_interval02 testcase

455275 - CVE-2008-2148 kernel: fix permission checking in sys_utimensat

455747 - Oops when running oprofile

 

6. Package List:

 

MRG Realtime for RHEL 5 Server:

 

Source:

ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/RHEMRG-RHEL5/SRPMS/kernel-rt-2.6.24.7-74.el5rt.src.rpm

 

i386:

kernel-rt-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-debug-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-debug-debuginfo-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-debug-devel-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-debuginfo-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-debuginfo-common-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-devel-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-trace-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-trace-debuginfo-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-trace-devel-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-vanilla-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-74.el5rt.i686.rpm

kernel-rt-vanilla-devel-2.6.24.7-74.el5rt.i686.rpm

 

noarch:

kernel-rt-doc-2.6.24.7-74.el5rt.noarch.rpm

 

x86_64:

kernel-rt-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-debug-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-debug-debuginfo-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-debug-devel-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-debuginfo-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-debuginfo-common-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-devel-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-trace-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-trace-debuginfo-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-trace-devel-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-vanilla-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-vanilla-debuginfo-2.6.24.7-74.el5rt.x86_64.rpm

kernel-rt-vanilla-devel-2.6.24.7-74.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-2007-5966

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6282

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6712

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1615

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2136

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2148

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2372

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2729

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2826

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 2008 Red Hat, Inc.

-----BEGIN PGP SIGNATURE-----

Version: GnuPG v1.4.4 (GNU/Linux)

 

iD4DBQFItGZbXlSAg2UNWIIRAtItAJ9AAQwwAD6x2JcydWHuRx/mUj7rzQCYjy+w

gLRpblvLnYaY3nTIDePYRQ==

=arLE

-----END PGP SIGNATURE-----

 

 

--