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Bug 482580 (CVE-2013-5634)

Summary: Kernel : ARM: KVM: NULL pointer dereferences (CVE-2013-5634)
Product: Gentoo Security Reporter: Agostino Sarubbo <ago>
Component: KernelAssignee: Gentoo Kernel Security <security-kernel>
Severity: normal CC: kernel
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Package list:
Runtime testing required: ---

Description Agostino Sarubbo gentoo-dev 2013-08-26 17:25:15 UTC
From ${URL} :

Linux kernel built for the ARM(CONFIG_ARM) platform along with the Kernel 
based Virtual Machine support(CONFIG_KVM), is vulnerable to a NULL pointer 
dereference flaw. It occurs while performing an ioctl(KVM_GET_REG_LIST) call 
on the KVM device, without first properly initialising a vCPU.

An unprivileged user/program could use this flaw to crash the kernel resulting 
in DoS.

Upstream fix:
- -------------
Comment 1 GLSAMaker/CVETool Bot gentoo-dev 2013-09-30 22:12:11 UTC
CVE-2013-5634 (
  arch/arm/kvm/arm.c in the Linux kernel before 3.10 on the ARM platform, when
  KVM is used, allows host OS users to cause a denial of service (NULL pointer
  dereference, OOPS, and host OS crash) or possibly have unspecified other
  impact by omitting vCPU initialization before a KVM_GET_REG_LIST ioctl call.
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-03-25 15:32:32 UTC
Fix in 3.10 onwards