tcg/i386: Check the size of instruction being translated
commit30663fd26c0307e414622c7a8607fbc04f92ec14
authorPranith Kumar <bobby.prani@gmail.com>
Thu, 23 Mar 2017 17:58:51 +0000 (23 13:58 -0400)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 24 Mar 2017 10:49:38 +0000 (24 11:49 +0100)
tree68fdff3693c9c025e32cd01d03ca96274ecf90f1
parent71407786054cad26de7ef66718b2a57a4bcb49b5
tcg/i386: Check the size of instruction being translated

This fixes the bug: 'user-to-root privesc inside VM via bad translation
caching' reported by Jann Horn here:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1122

Reviewed-by: Richard Henderson <rth@twiddle.net>
CC: Peter Maydell <peter.maydell@linaro.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Message-Id: <20170323175851.14342-1-bobby.prani@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
target/i386/translate.c