Debian 5.0.4: DSA-1927-1 Critical: Privilege Escalation And DoS

Notice: Debian 5.0.4, the next point release of Debian 'lenny', will
include a new default value for the mmap_min_addr tunable. This
change will add an additional safeguard against a class of security
vulnerabilities known as "NULL pointer dereference" vulnerabilities,
but it will need to be overridden when using certain applications.
Additional information about this change, including instructions for
making this change locally in advance of 5.0.4 (recommended), can be
found at:
https://wiki.debian.org/mmap_min_addr

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service, sensitive memory leak or privilege
escalation. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2009-3228

Eric Dumazet reported an instance of uninitialized kernel memory
in the network packet scheduler. Local users may be able to
exploit this issue to read the contents of sensitive kernel
memory.

CVE-2009-3238

Linus Torval...