oss-security - CVE request: kernel: kvm kernel stack leakage

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Date: Thu, 4 Nov 2010 16:05:39 -0400 (EDT)
From: Petr Matousek <pmatouse@...hat.com>
To: oss-security@...ts.openwall.com
Cc: coley@...us.mitre.org
Subject: CVE request: kernel: kvm kernel stack leakage

"Structures kvm_vcpu_events, kvm_debugregs, kvm_pit_state2 and kvm_clock_data
are copied to userland with some padding and reserved fields unitialized.  It
leads to leaking of contents of kernel stack memory."

Upstream commit:
http://git.kernel.org/?p=virt/kvm/kvm.git;a=commit;h=831d9d02f9522e739825a51a11e3bc5aa531a905

Credit: Vasiliy Kulikov

Reference:
http://www.spinics.net/lists/kvm/msg44130.html
https://bugzilla.redhat.com/show_bug.cgi?id=649920

Thanks,
--
Petr Matousek / Red Hat Security Response Team

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