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Vigil@nce: Linux kernel, denial of service of __scm_destroy

November 2008 by Vigil@nce

SYNTHESIS

An local attacker can execute a program closing closing a socket in order to stop the computer.

Gravity: 1/4

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

IMPACTED PRODUCTS

- Linux kernel

DESCRIPTION

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.

CHARACTERISTICS

Identifiers: VIGILANCE-VUL-8236

http://vigilance.fr/vulnerability/8236




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