projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: d0e536d) | patch
KVM: x86: work around infinite loop in microcode when #AC is delivered
authorEric Northup <digitaleric@google.com>
Tue, 3 Nov 2015 17:03:53 +0000 (18:03 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 10 Nov 2015 11:06:24 +0000 (12:06 +0100)
commit54a20552e1eae07aa240fa370a0293e006b5faed
tree68f23011f566132ae1dc3351c30227d1f1b85dc0tree | snapshot (tar.gz zip)
parentd0e536d89395ecd8ab78fe999dc4d6f5d140ce46commit | diff
KVM: x86: work around infinite loop in microcode when #AC is delivered

It was found that a guest can DoS a host by triggering an infinite
stream of "alignment check" (#AC) exceptions.  This causes the
microcode to enter an infinite loop where the core never receives
another interrupt.  The host kernel panics pretty quickly due to the
effects (CVE-2015-5307).

Signed-off-by: Eric Northup <digitaleric@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/include/uapi/asm/svm.h diff | blob | blame | history
arch/x86/kvm/svm.c diff | blob | blame | history
arch/x86/kvm/vmx.c diff | blob | blame | history