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| author | Ido Yariv <ido@wizery.com> | 2016-10-21 12:39:57 -0400 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-11 10:57:41 +0200 |
| commit | 46c7036c4e91ce896a90a7a353c1eb0c61eab0e4 (patch) | |
| tree | cb90e129053abbdee4210185fa7610da27494e18 /lib/timerqueue.c | |
| parent | fa33ed6cc7628e2791be3eb90a98db59b2445a81 (diff) | |
KVM: x86: fix wbinvd_dirty_mask use-after-free
commit bd768e146624cbec7122ed15dead8daa137d909d upstream.
vcpu->arch.wbinvd_dirty_mask may still be used after freeing it,
corrupting memory. For example, the following call trace may set a bit
in an already freed cpu mask:
kvm_arch_vcpu_load
vcpu_load
vmx_free_vcpu_nested
vmx_free_vcpu
kvm_arch_vcpu_free
Fix this by deferring freeing of wbinvd_dirty_mask.
Signed-off-by: Ido Yariv <ido@wizery.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim KrÄmáŠ<rkrcmar@redhat.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions