Debian Security Advisory DSA 444-1                     security@debian.org 
Debian -- Security Information                              Martin Schulze
February 20th, 2004                      Debian -- Debian security FAQ 
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Package        : kernel-image-2.4.17-ia64
Vulnerability  : missing function return value check
Problem-Type   : local
Debian-specific: no
CVE ID         : CAN-2004-0077

Paul Starzetz and Wojciech Purczynski of isec.pl discovered a critical
security vulnerability in the memory management code of Linux inside
the mremap(2) system call.  Due to missing function return value check
of internal functions a local attacker can gain root privileges.

For the stable distribution (woody) this problem has been fixed in
version 011226.16 of ia64 kernel source and images.

Other architectures are or will be mentioned in a separate advisory
respectively or are not affected (m68k).

For the unstable distribution (sid) this problem will be fixed in version
2.4.24-3.

This problem is also fixed in the upstream version of Linux 2.4.25 and
2.6.3.

We recommend that you upgrade your Linux kernel packages immediately.


Upgrade Instructions
- --------------------

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 3.0 alias woody
- --------------------------------

  Source archives:

      
      Size/MD5 checksum:      736 ce2c07cdef967852affbded0c3b87d07
      
      Size/MD5 checksum: 25404148 fc05010d0a2597556ade2725bd9964ba

  Architecture independent components:

      
      Size/MD5 checksum: 24735276 62b217b8063eee0e7bcc0dab7cf1d436

  Intel IA-64 architecture:

      
      Size/MD5 checksum:  3635878 a80b582cac7154d87a683d3fb26504a9
      
      Size/MD5 checksum:  7019622 55c55179d90f2f65b855a6ae4190cc70
      
      Size/MD5 checksum:  7168586 8f95a26976bcedae6bece27dd60237e1
      
      Size/MD5 checksum:  7011682 001c6f5ed436bfcd42acbb6d6046b11c
      
      Size/MD5 checksum:  7161374 586b7f6a4912694036df7dfadd4a57ca


  These files will probably be moved into the stable distribution on
  its next revision.

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For apt-get: deb  Debian -- Security Information  stable/updates main
For dpkg-ftp:    dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show ' and  http://packages.debian.org/