FreeBSD Security Advisory - System calls operating on file descriptors obtain a reference to relevant struct file which due to a programming error was not always put back, which in turn could be used to overflow the counter of affected struct file. A local user can use this flaw to obtain access to files, directories, sockets etc. opened by processes owned by other users. If obtained struct file represents a directory from outside of user's jail, it can be used to access files outside of the jail. If the user in question is a jailed root they can obtain root privileges on the host system.
489c8ae54e5e9d5645a9286ff4c958fe29ebf8eb10cfad1509a4f8ce2b45cf9eFreeBSD Security Advisory - A programming error in the handling of Linux futex robust lists may result in incorrect memory locations being accessed. It is possible for a local attacker to read portions of kernel memory, which may result in a privilege escalation.
6e71a946b05a4fbf7520e8ab6b55ed26c9e72fb9ef0e53bb0028769e88743e7bFreeBSD Security Advisory - The namei facility will leak a small amount of kernel memory every time a sandboxed process looks up a nonexistent path name. A remote attacker that can cause a sandboxed process (for instance, a web server) to look up a large number of nonexistent path names can cause memory exhaustion.
9f8ed0e936fbf5d1fb78455e4ed7b09c663c7772d634ea2b4ab832a530fd924dFreeBSD Security Advisory - FreeBSD is binary-compatible with the Linux operating system through a loadable kernel module/optional kernel component. A programming error in the handling of some Linux system calls may result in memory locations being accessed without proper validation. It is possible for a local attacker to overwrite portions of kernel memory, which may result in a privilege escalation or cause a system panic.
6702f60b55d6453bd757f5c5f78ebb7b3615928a68a5c006f536a774870013bf
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