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authorMarios Pomonis <pomonis@google.com>2019-12-11 21:47:45 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2020-01-27 19:59:38 +0100
commit670564559ca35b439c8d8861fc399451ddf95137 (patch)
treef82abf1487e9e73a1a252b1bee91b2cbb65e2731 /arch/x86/realmode/rm
parentKVM: x86: Protect ioapic_read_indirect() from Spectre-v1/L1TF attacks (diff)
downloadlinux-670564559ca35b439c8d8861fc399451ddf95137.tar.xz
linux-670564559ca35b439c8d8861fc399451ddf95137.zip
KVM: x86: Protect ioapic_write_indirect() from Spectre-v1/L1TF attacks
This fixes a Spectre-v1/L1TF vulnerability in ioapic_write_indirect(). This function contains index computations based on the (attacker-controlled) IOREGSEL register. This patch depends on patch "KVM: x86: Protect ioapic_read_indirect() from Spectre-v1/L1TF attacks". Fixes: 70f93dae32ac ("KVM: Use temporary variable to shorten lines.") Signed-off-by: Nick Finco <nifi@google.com> Signed-off-by: Marios Pomonis <pomonis@google.com> Reviewed-by: Andrew Honig <ahonig@google.com> Cc: stable@vger.kernel.org Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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