Orange Applications for Business
Vigil@nce Vigil@nce Vigil@nce
analyzing computer vulnerabilities since 1999
  home presentation vulnerabilities documentation contact  
subscriber area subscriber area
free access free access
The Vigil@nce team watches vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.
recent vulnerabilities recent vulnerabilities
tracked products tracked products
RSS feed RSS feed
vulnerability

vulnerability CVE-2013-5634

Linux kernel: denial of service via KVM_GET_REG_LIST

Synthesis of the vulnerability

When an ARM system is configured with KVM, a local attacker can use the KVM_GET_REG_LIST ioctl of the Linux kernel, in order to trigger a denial of service.
Impacted products: Linux.
Severity: 2/4.
Creation date: 26/08/2013.
Identifiers: BID-61995, CVE-2013-5634, VIGILANCE-VUL-13315.

Description of the vulnerability

When KVM is configured on an ARM processor, users can access to a virtual CPU (VCPU).

The KVM_ARM_VCPU_INIT ioctl initializes the resource, and the KVM_GET_REG_LIST ioctl lists register information. However, several functions of the arch/arm/kvm/arm.c file do not check if KVM_ARM_VCPU_INIT was called. The kernel then accesses to an invalid memory area.

When an ARM system is configured with KVM, a local attacker can therefore use the KVM_GET_REG_LIST ioctl of the Linux kernel, in order to trigger a denial of service.
Complete Vigil@nce bulletin.... (free access)

Share this bulletin

Delicious Digg Facebook Google bookmarks LinkedIn Mail Reddit StumbleUpon Technorati Twitter 

Computer vulnerabilities tracking service

Vigil@nce provides computer vulnerability alerts. Each administrator can customize the list of products for which he wants to receive vulnerability alerts. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system. The Vigil@nce vulnerability database contains several thousand vulnerabilities.



















Copyright 1999-2014 Vigil@nce. Vigil@nce is a service from Orange Applications for Business. Site map. Legal notice. Version française