The TCP implementation in various BSD operating systems (tcp_input.c) does not properly block connections to broadcast addresses, which could allow remote attackers to bypass intended filters via packets with a unicast link layer address and an IP broadcast address.

IP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.

File creation and deletion, and remote execution, in the BSD line printer daemon (lpd).

The chpass command in OpenBSD allows a local user to gain root access through file descriptor leakage.

Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames.

mmap function in BSD allows local attackers in the kmem group to modify memory through devices.

The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed packets even when the (1) dosourceroute or (2) forwarding variables are set, which allows remote attackers to spoof TCP connections.

FreeBSD mmap function allows users to modify append-only or immutable files.

A race condition between the select() and accept() calls in NetBSD TCP servers allows remote attackers to cause a denial of service.

Denial of service in "poll" in OpenBSD.

OpenBSD kernel crash through TSS handling, as caused by the crashme program.

OpenBSD crash using nlink value in FFS and EXT2FS filesystems.

Buffer overflow in OpenBSD ping.

Remote attackers can cause a system crash through ipintr() in ipq in OpenBSD.

The BSD profil system call allows a local user to modify the internal data space of a program via profiling and execve.

OpenBSD, BSDI, and other Unix operating systems allow users to set chflags and fchflags on character and block devices.

A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted.

Buffer overflow in OpenBSD procfs and fdescfs file systems via uio_offset in the readdir() function.

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.