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(parent: ede885e) | patch
KVM: SVM: prevent DBG_DECRYPT and DBG_ENCRYPT overflow
authorDavid Rientjes <rientjes@google.com>
Mon, 25 Mar 2019 18:47:31 +0000 (11:47 -0700)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 5 Apr 2019 18:49:42 +0000 (20:49 +0200)
commitb86bc2858b389255cd44555ce4b1e427b2b770c0
tree0744c853c7f9e063f9349963b306eb0bef0d72a4tree | snapshot
parentede885ecb2cdf8a8dd5367702e3d964ec846a2d5commit | diff
KVM: SVM: prevent DBG_DECRYPT and DBG_ENCRYPT overflow

This ensures that the address and length provided to DBG_DECRYPT and
DBG_ENCRYPT do not cause an overflow.

At the same time, pass the actual number of pages pinned in memory to
sev_unpin_memory() as a cleanup.

Reported-by: Cfir Cohen <cfir@google.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/svm.c diff | blob | history
John Crispins staging tree