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Bug 293530 - Kernel: KVM MCE "KVM_X86_SETUP_MCE" Buffer Overflow
Summary: Kernel: KVM MCE "KVM_X86_SETUP_MCE" Buffer Overflow
Status: RESOLVED DUPLICATE of bug 294244
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: Gentoo Security
URL: http://git.kernel.org/?p=linux/kernel...
Whiteboard: [linux <2.6.32]
Keywords:
Depends on:
Blocks:
 
Reported: 2009-11-17 18:45 UTC by cilly
Modified: 2009-11-23 17:55 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---

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Description cilly 2009-11-17 18:45:30 UTC 
DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) and potentially gain escalated privileges.

The vulnerability is caused due to an error within the
"kvm_vcpu_ioctl_x86_setup_mce()" function in arch/x86/kvm/x86.c. This
can be exploited to corrupt kernel memory by e.g. sending a specially
crafted "KVM_X86_SETUP_MCE" IOCTL.

SOLUTION:
Fixed in version 2.6.32.-rc7.

PROVIDED AND/OR DISCOVERED BY:
Disclosed in a GIT commit.

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa
Comment 1 Bjoern Tropf (RETIRED) gentoo-dev 2009-11-23 17:55:54 UTC 

*** This bug has been marked as a duplicate of bug 294244 ***