The default installation of Debian GNU/Linux uses an insecure Master Boot Record (MBR) which allows a local user to boot from a floppy disk during the installation.

Linux apcd program allows local attackers to modify arbitrary files via a symlink attack.

The line printer daemon (lpd) in the lpr package in multiple Linux operating systems authenticates by comparing the reverse-resolved hostname of the local machine to the hostname of the print server as returned by gethostname, which allows remote attackers to bypass intended access controls by modifying the DNS for the attacking IP.

The snprintf function in the db library 1.85.4 ignores the size parameter, which could allow attackers to exploit buffer overflows that would be prevented by a properly implemented snprintf.

nviboot boot script in the Debian nvi package allows local users to delete files via malformed entries in vi.recover.

htdig allows remote attackers to execute commands via filenames with shell metacharacters.

The ping command in Linux 2.0.3x allows local users to cause a denial of service by sending large packets with the -R (record route) option.

dump in Debian GNU/Linux 2.1 does not properly restore symlinks, which allows a local user to modify the ownership of arbitrary files.

Denial of service in Linux syslogd via a large number of connections.

Buffer overflow in NFS server on Linux allows attackers to execute commands via a long pathname.

Denial of service in Debian IRC Epic/epic4 client via a long string.

Vixie Cron on Linux systems allows local users to set parameters of sendmail commands via the MAILTO environmental variable.

Buffer overflow in Vixie cron allows local users to gain root access via a long MAILTO environment variable in a crontab file.

Trn allows local users to overwrite other users' files via symlinks.

Man2html 2.1 and earlier allows local users to overwrite arbitrary files via a symlink attack on a temporary file.

The logging facility of the Debian smtp-refuser package allows local users to delete arbitrary files using symbolic links.

The Debian mailman package uses weak authentication, which allows attackers to gain privileges.

The zsoelim program in the Debian man-db package allows local users to overwrite files via a symlink attack.

Sudo 1.5 in Debian Linux 2.1 and Red Hat 6.0 allows local users to determine the existence of arbitrary files by attempting to execute the target filename as a program, which generates a different error message when the file does not exist.

Denial of service in Linux 2.2.x kernels via malformed ICMP packets containing unusual types, codes, and IP header lengths.