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KVM: VMX: fix use after free of vmx->loaded_vmcs
authorMarcelo Tosatti <mtosatti@redhat.com>
Fri, 3 Jan 2014 19:00:51 +0000 (17:00 -0200)
committerMarcelo Tosatti <mtosatti@redhat.com>
Wed, 8 Jan 2014 21:14:08 +0000 (19:14 -0200)
commit26a865f4aa8e66a6d94958de7656f7f1b03c6c56
treefc16111cb9f5664f512b554321f9a796e75b8ed5tree | snapshot
parent96893977b8f732493815e7a2b552c37e1bb967e5commit | diff
KVM: VMX: fix use after free of vmx->loaded_vmcs

After free_loaded_vmcs executes, the "loaded_vmcs" structure
is kfreed, and now vmx->loaded_vmcs points to a kfreed area.
Subsequent free_loaded_vmcs then attempts to manipulate
vmx->loaded_vmcs.

Switch the order to avoid the problem.

https://bugzilla.redhat.com/show_bug.cgi?id=1047892

Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
arch/x86/kvm/vmx.c diff | blob | history
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