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| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-10-26 15:45:47 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2018-01-15 12:08:07 -0800 |
| commit | 51776043afa415435c7e4636204fbe4f7edc4501 (patch) | |
| tree | 7b3364b6df0e880aa682ec710a69b11953e4ad79 /mm | |
| parent | 46515736f8687c5dbde5637ca2f2678055c9c0f7 (diff) | |
| download | linux-next-51776043afa415435c7e4636204fbe4f7edc4501.tar.gz | |
kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl
This ioctl is obsolete (it was used by Xenner as far as I know) but
still let's not break it gratuitously... Its handler is copying
directly into struct kvm. Go through a bounce buffer instead, with
the added benefit that we can actually do something useful with the
flags argument---the previous code was exiting with -EINVAL but still
doing the copy.
This technically is a userspace ABI breakage, but since no one should be
using the ioctl, it's a good occasion to see if someone actually
complains.
Cc: kernel-hardening@lists.openwall.com
Cc: Kees Cook <keescook@chromium.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions