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KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)
authorPaolo Bonzini <pbonzini@redhat.com>
Wed, 4 Dec 2019 09:28:54 +0000 (10:28 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 4 Dec 2019 11:14:41 +0000 (12:14 +0100)
commit404ab6bf3d3feda509fe87feff0380108347feb8
treeaa0ec5e38b98fe7835f354af7af331ec96b55876tree | snapshot
parent9a1d3c6f77e117dbd4143e314bacc3b4bb0e3e42commit | diff
KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)

The bounds check was present in KVM_GET_SUPPORTED_CPUID but not
KVM_GET_EMULATED_CPUID.

Reported-by: syzbot+e3f4897236c4eeb8af4f@syzkaller.appspotmail.com
Fixes: c1aa81429610 ("kvm: Emulate MOVBE", 2013-10-29)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/cpuid.c diff | blob | history
Linux Kernel Source Tree.