Vigil@nce: Linux kernel, denial of service of __scm_destroy
November 2008 by Vigil@nce
An local attacker can execute a program closing closing a socket in order to stop the computer.
Consequences: denial of service of computer
Provenance: user account
Means of attack: 1 attack
Ability of attacker: technician (2/4)
Confidence: confirmed by the editor (5/5)
Diffusion of the vulnerable configuration: high (3/3)
Creation date: 12/11/2008
A Unix socket can be used to exchange messages. These messages can contain a file descriptor associated to a socket.
However, when this socket is closed, the __scm_destroy() function is called recursively, which stops the system.
A local attacker can therefore create a denial of service.