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(parent: 170fa2c) | patch
KVM: Prevent overflow in KVM_GET_SUPPORTED_CPUID
authorAvi Kivity <avi@redhat.com>
Sun, 4 Oct 2009 14:45:13 +0000 (16:45 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Mon, 12 Oct 2009 19:40:17 +0000 (12:40 -0700)
commit779632b438a79ab1ed1f0da390712b12db3b2a58
tree98fee427170529b3b8f96acc56aa436f52b912b1tree | snapshot
parent170fa2cc0c90885acdda6b71dd25b5d14960ed5bcommit | diff
KVM: Prevent overflow in KVM_GET_SUPPORTED_CPUID

commit 6a54435560efdab1a08f429a954df4d6c740bddf upstream.

The number of entries is multiplied by the entry size, which can
overflow on 32-bit hosts.  Bound the entry count instead.

Reported-by: David Wagner <daw@cs.berkeley.edu>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
arch/x86/kvm/x86.c diff | blob | history
Linux kernel for KaRo TX COM modules