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| author | Andrew Honig <ahonig@google.com> | 2015-11-18 23:50:23 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-22 15:36:26 +0100 |
| commit | 0185604c2d82c560dab2f2933a18f797e74ab5a8 (patch) | |
| tree | 227382c16c0ce92f1912892e159f6aa770235f3a /arch/x86/kvm/mmutrace.h | |
| parent | KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID (diff) | |
| download | linux-0185604c2d82c560dab2f2933a18f797e74ab5a8.tar.xz linux-0185604c2d82c560dab2f2933a18f797e74ab5a8.zip | |
KVM: x86: Reload pit counters for all channels when restoring state
Currently if userspace restores the pit counters with a count of 0
on channels 1 or 2 and the guest attempts to read the count on those
channels, then KVM will perform a mod of 0 and crash. This will ensure
that 0 values are converted to 65536 as per the spec.
This is CVE-2015-7513.
Signed-off-by: Andy Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmutrace.h')
0 files changed, 0 insertions, 0 deletions