Phong Nguyen identified a severe bug in the way GnuPG creates anduses ElGamal keys, when those keys are used both to sign and encryptdata. This vulnerability can be used to trivially recover theprivate key.
XBoard 4.2.6 and older contains a script which writes to a file in /tmp with a predictable filename. Malicious users could use this vulnerability to force XBoard users to overwrite any file writableby them.
A heap overflow bug exists in rsync versions prior to 2.5.7. Onmachines where the rsync server has been enabled, a remote attackercould use this flaw to execute arbitrary code as an unprivileged user.
The kernel shipped with Fedora Core 1 was vulnerable to a bug in theerror return on a concurrent fork() with threaded exit() which could beexploited by a user level program to crash the kernel.