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| author | Andy Honig <ahonig@google.com> | 2013-11-19 00:09:22 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-20 15:48:52 (GMT) |
| commit | 41fe7fa8fdeaa5a2a9f3ecaa9a47e2d2afa1b2b1 (patch) | |
| tree | 4ceafd36788afd201d7dad75fb35f4f7ac3a4af0 /COPYING | |
| parent | 2925f142d855585427a63da50744766a47659e0f (diff) | |
| download | linux-fsl-qoriq-41fe7fa8fdeaa5a2a9f3ecaa9a47e2d2afa1b2b1.tar.xz | |
KVM: Improve create VCPU parameter (CVE-2013-4587)
commit 338c7dbadd2671189cec7faf64c84d01071b3f96 upstream.
In multiple functions the vcpu_id is used as an offset into a bitfield. Ag
malicious user could specify a vcpu_id greater than 255 in order to set or
clear bits in kernel memory. This could be used to elevate priveges in the
kernel. This patch verifies that the vcpu_id provided is less than 255.
The api documentation already specifies that the vcpu_id must be less than
max_vcpus, but this is currently not checked.
Reported-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions