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| author | Marios Pomonis <pomonis@google.com> | 2019-12-11 12:47:50 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:29:57 -0500 |
| commit | 2b158e93c85fbc5880351e4082a1d1dcbfa6f183 (patch) | |
| tree | fb0d15916774507870a99db2e3844a227c2fdf6e /scripts/objdiff | |
| parent | b9112b448e4e1069c16e4f57474dd4ba1f62ec79 (diff) | |
KVM: x86: Refactor prefix decoding to prevent Spectre-v1/L1TF attacks
commit 125ffc5e0a56a3eded608dc51e09d5ebf72cf652 upstream.
This fixes Spectre-v1/L1TF vulnerabilities in
vmx_read_guest_seg_selector(), vmx_read_guest_seg_base(),
vmx_read_guest_seg_limit() and vmx_read_guest_seg_ar(). When
invoked from emulation, these functions contain index computations
based on the (attacker-influenced) segment value. Using constants
prevents the attack.
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions