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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          New kernel fixes local denial of service issue
Advisory ID:       RHSA-2002:262-07
Issue date:        2002-09-23
Updated on:        2002-11-16
Product:           Red Hat Linux
Keywords:          bugtraq DoS
Cross references:  
Obsoletes:         RHSA-2002:205 RHSA-2002:206
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1. Topic:

The kernel in Red Hat Linux 7.1, 7.1K, 7.2, 7.3, and 8.0 are vulnerable to
a local denial of service attack.  Updated packages are available which
address this vulnerability, as well as bugs in several drivers.

2. Relevant releases/architectures:

Red Hat Linux 7.1 - athlon, i386, i586, i686
Red Hat Linux 7.2 - athlon, i386, i586, i686
Red Hat Linux 7.3 - athlon, i386, i586, i686
Red Hat Linux 8.0 - athlon, i386, i586, i686

3. Problem description:

The Linux kernel handles the basic functions of the operating system.
A vulnerability in the Linux kernel has been discovered in which a non-root
user can cause the machine to freeze. This kernel addresses the
vulnerability.  

Note: This bug is specific to the x86 architecture kernels only, and does
not affect ia64 or other architectures.

In addition, a bug in the maestro3 soundcard driver has been fixed as well
as a bug in the xircom pcmcia driver network driver and the tg3 network
driver for Broadcom gigabit ethernet chips.

All users of Red Hat Linux 7.1, 7.1K, 7.2, 7.3, and 8.0 should upgrade to
these errata packages, which are not vulnerable to this issue.

Thanks go to Christopher Devine for reporting the vulnerability on bugtraq,
and Petr Vandrovec for being the first to supply a fix to the community.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied, especially the additional
packages from RHSA-2002:205 and RHSA-2002:206 respectively.

The procedure for upgrading the kernel manually is documented at:
 
Support

Please read the directions for your architecture carefully before
proceeding with the kernel upgrade.

Please note that this update is also available via Red Hat Network. Many
people find this to be an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system. Note that you need to select the kernel
explicitly on default configurations of up2date.

5. Bug IDs fixed  (  for more info):

77834 - Working Dos from bugtraq mailing list
69920 - Kernel Crashes in TG3 Driver
76171 - kernel-2.4.18-17.7.x update caused maestro3 to stop working
77138 - Sound Modules Fail for Enigma kernel 2.4.18-17.7.x on Dell Latitude J750
76555 - problems with kernel-2.4.18-17.8.0 on Dell Latitude CPx
77565 - [gdth] NULL pointer dereference in scsi.c (scsi_release_commandblocks)
76233 - new kernel up2date hangs laptop at shutdown
77241 - esd peaks CPU w/ kernel 2.4.18-17.8.0 on Dell Inspiron 8100
77258 - Ethernet interface not working on SiS 963 south bridge (SiS 648 chipset)
77134 - Sound Modules fail for Enigma kernel 2.4.18-17.7.x
76385 - 2.4.18-17.7.x update breaks Wacom tablet support
75359 - kernel source does not compile due to missing include files
76624 - Segmentation Fault using GDTH on RH72 kernel-smp-2.4.18-17.7.x
76206 - xirc2ps_cs hangs apmd after upgrading to 2.4.18-17

6. RPMs required:

Red Hat Linux 7.1:

SRPMS: 
 

athlon: 
  
 

i386: 
  
  
  
 

i586: 
  
 

i686: 
  
  
  
 

Red Hat Linux 7.2:

SRPMS: 
 

athlon: 
  
 

i386: 
  
  
  
 

i586: 
  
 

i686: 
  
  
  
 

Red Hat Linux 7.3:

SRPMS: 
 

athlon: 
  
 

i386: 
  
  
  
 

i586: 
  
 

i686: 
  
  
  
 

Red Hat Linux 8.0:

SRPMS: 
 

athlon: 
  
 

i386: 
  
  
  
 

i586: 
  
 

i686: 
  
  
  
  
 



7. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
7f8581e632826cafd7530109c79c19bb 7.1/en/os/SRPMS/kernel-2.4.18-18.7.x.src.rpm
e38b754b71fb5a091f3bce785c968724 7.1/en/os/athlon/kernel-2.4.18-18.7.x.athlon.rpm
0ab8f1aa236289f6c3c9c152cd578669 7.1/en/os/athlon/kernel-smp-2.4.18-18.7.x.athlon.rpm
d16d76b77189d9da17481e9c0e0cc0ca 7.1/en/os/i386/kernel-2.4.18-18.7.x.i386.rpm
026e9c4a13ba2fd3fdd49eb9b2f432ea 7.1/en/os/i386/kernel-BOOT-2.4.18-18.7.x.i386.rpm
02c6831a3e971fab22ecbb5f1e1a09f3 7.1/en/os/i386/kernel-doc-2.4.18-18.7.x.i386.rpm
a81a5af709b40d713100a82124e7c0dd 7.1/en/os/i386/kernel-source-2.4.18-18.7.x.i386.rpm
fd20bdd2a82510eab8e8498fec0232fb 7.1/en/os/i586/kernel-2.4.18-18.7.x.i586.rpm
a1ed7b8fd3d6de8db0ec73b0b4e75f1d 7.1/en/os/i586/kernel-smp-2.4.18-18.7.x.i586.rpm
d8adfe12ad67f8bac27339a450b97499 7.1/en/os/i686/kernel-2.4.18-18.7.x.i686.rpm
ff7a46200b12e53e5092b9d889c7cb9c 7.1/en/os/i686/kernel-bigmem-2.4.18-18.7.x.i686.rpm
61e83bb1999b8fa861fb98f41b8f46ef 7.1/en/os/i686/kernel-debug-2.4.18-18.7.x.i686.rpm
20be5fba2e3ebe73c1126bb61fce6c43 7.1/en/os/i686/kernel-smp-2.4.18-18.7.x.i686.rpm
7f8581e632826cafd7530109c79c19bb 7.2/en/os/SRPMS/kernel-2.4.18-18.7.x.src.rpm
e38b754b71fb5a091f3bce785c968724 7.2/en/os/athlon/kernel-2.4.18-18.7.x.athlon.rpm
0ab8f1aa236289f6c3c9c152cd578669 7.2/en/os/athlon/kernel-smp-2.4.18-18.7.x.athlon.rpm
d16d76b77189d9da17481e9c0e0cc0ca 7.2/en/os/i386/kernel-2.4.18-18.7.x.i386.rpm
026e9c4a13ba2fd3fdd49eb9b2f432ea 7.2/en/os/i386/kernel-BOOT-2.4.18-18.7.x.i386.rpm
02c6831a3e971fab22ecbb5f1e1a09f3 7.2/en/os/i386/kernel-doc-2.4.18-18.7.x.i386.rpm
a81a5af709b40d713100a82124e7c0dd 7.2/en/os/i386/kernel-source-2.4.18-18.7.x.i386.rpm
fd20bdd2a82510eab8e8498fec0232fb 7.2/en/os/i586/kernel-2.4.18-18.7.x.i586.rpm
a1ed7b8fd3d6de8db0ec73b0b4e75f1d 7.2/en/os/i586/kernel-smp-2.4.18-18.7.x.i586.rpm
d8adfe12ad67f8bac27339a450b97499 7.2/en/os/i686/kernel-2.4.18-18.7.x.i686.rpm
ff7a46200b12e53e5092b9d889c7cb9c 7.2/en/os/i686/kernel-bigmem-2.4.18-18.7.x.i686.rpm
61e83bb1999b8fa861fb98f41b8f46ef 7.2/en/os/i686/kernel-debug-2.4.18-18.7.x.i686.rpm
20be5fba2e3ebe73c1126bb61fce6c43 7.2/en/os/i686/kernel-smp-2.4.18-18.7.x.i686.rpm
7f8581e632826cafd7530109c79c19bb 7.3/en/os/SRPMS/kernel-2.4.18-18.7.x.src.rpm
e38b754b71fb5a091f3bce785c968724 7.3/en/os/athlon/kernel-2.4.18-18.7.x.athlon.rpm
0ab8f1aa236289f6c3c9c152cd578669 7.3/en/os/athlon/kernel-smp-2.4.18-18.7.x.athlon.rpm
d16d76b77189d9da17481e9c0e0cc0ca 7.3/en/os/i386/kernel-2.4.18-18.7.x.i386.rpm
026e9c4a13ba2fd3fdd49eb9b2f432ea 7.3/en/os/i386/kernel-BOOT-2.4.18-18.7.x.i386.rpm
02c6831a3e971fab22ecbb5f1e1a09f3 7.3/en/os/i386/kernel-doc-2.4.18-18.7.x.i386.rpm
a81a5af709b40d713100a82124e7c0dd 7.3/en/os/i386/kernel-source-2.4.18-18.7.x.i386.rpm
fd20bdd2a82510eab8e8498fec0232fb 7.3/en/os/i586/kernel-2.4.18-18.7.x.i586.rpm
a1ed7b8fd3d6de8db0ec73b0b4e75f1d 7.3/en/os/i586/kernel-smp-2.4.18-18.7.x.i586.rpm
d8adfe12ad67f8bac27339a450b97499 7.3/en/os/i686/kernel-2.4.18-18.7.x.i686.rpm
ff7a46200b12e53e5092b9d889c7cb9c 7.3/en/os/i686/kernel-bigmem-2.4.18-18.7.x.i686.rpm
61e83bb1999b8fa861fb98f41b8f46ef 7.3/en/os/i686/kernel-debug-2.4.18-18.7.x.i686.rpm
20be5fba2e3ebe73c1126bb61fce6c43 7.3/en/os/i686/kernel-smp-2.4.18-18.7.x.i686.rpm
65f6590b550c8a0d0b04bb885c12368d 8.0/en/os/SRPMS/kernel-2.4.18-18.8.0.src.rpm
946a8573a7af951a37f91bfbd445da07 8.0/en/os/athlon/kernel-2.4.18-18.8.0.athlon.rpm
c31721f77fc44fd6bab38c75ff66fa17 8.0/en/os/athlon/kernel-smp-2.4.18-18.8.0.athlon.rpm
6da80288107c7b7bb574c8aa47242e3b 8.0/en/os/i386/kernel-2.4.18-18.8.0.i386.rpm
889397ada127361d19bb29c83eb33b57 8.0/en/os/i386/kernel-BOOT-2.4.18-18.8.0.i386.rpm
9c91e050657805d547b1664ca55d7691 8.0/en/os/i386/kernel-doc-2.4.18-18.8.0.i386.rpm
b99ffefa103eeb4d12ad6efae9cf4ef1 8.0/en/os/i386/kernel-source-2.4.18-18.8.0.i386.rpm
93835d95e05a593fd86b497259d6a313 8.0/en/os/i586/kernel-2.4.18-18.8.0.i586.rpm
6ba903e2c94ea619baf10ebffdfd9a15 8.0/en/os/i586/kernel-smp-2.4.18-18.8.0.i586.rpm
41fea4a230a8989d16151fe21b38c9d4 8.0/en/os/i686/kernel-2.4.18-18.8.0.i686.rpm
3b5aa2480f92f79b2a9f597a865dc6a5 8.0/en/os/i686/kernel-bigmem-2.4.18-18.8.0.i686.rpm
6026588279d9871ffac63e15a9091563 8.0/en/os/i686/kernel-debug-2.4.18-18.8.0.i686.rpm
b94e4989c4c28fab3fbe1fa8b79ea902 8.0/en/os/i686/kernel-smp-2.4.18-18.8.0.i686.rpm
be0e87f588f1995d48ed72c3251d21be 8.0/en/os/i686/kernel-uml-2.4.18-18.8.0.i686.rpm


These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at  About

You can verify each package with the following command:
    
    rpm --checksig -v 

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    
    md5sum 


8. References:
 
 

9. Contact:

The Red Hat security contact is <security@RedHat.com>.  More contact
details at  All Red Hat products

Copyright(c) 2000, 2001, 2002 Red Hat, Inc.