Actu
Vigil@ance: Linux kernel, denial of service via AX.25
October 2009 by Vigil@nce
A local attacker can use an AX.25 socket, in order to stop the
system.
Severity: 1/4
Consequences: denial of service of computer
Provenance: user shell
Means of attack: no proof of concept, no attack
Ability of attacker: expert (4/4)
Confidence: confirmed by the editor (5/5)
Diffusion of the vulnerable configuration: low (1/3)
Creation date: 08/10/2009
IMPACTED PRODUCTS
– Linux kernel
DESCRIPTION OF THE VULNERABILITY
The net/ax25/af_ax25.c file implements AX.25 networks, used by
amateur radio operators.
The ax25_setsockopt() function does not check if the length of
options is negative, which generates a call to the BUG_ON() macro,
which stops the system.
A local attacker can therefore use the setsockopt() function on an
AX.25 socket, in order to stop the system.
CHARACTERISTICS
Identifiers: CVE-2009-2909, VIGILANCE-VUL-9076
http://vigilance.fr/vulnerability/Linux-kernel-denial-of-service-via-AX-25-9076
