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| author | Vasiliy Kulikov <segooon@gmail.com> | 2010-10-30 13:04:24 +0400 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-11-05 19:42:26 +0300 |
| commit | d8cdddcd645766cd4d80fa222226ae6ebfb706af (patch) | |
| tree | 5f439c89be44bf2bcccdb745a5c37824d5a1ee67 | |
| parent | eb45fda45f915c7ca3e81e005e853cb770da2642 (diff) | |
| download | linux-d8cdddcd645766cd4d80fa222226ae6ebfb706af.tar.xz | |
KVM: PPC: fix information leak to userland
Structure kvm_ppc_pvinfo is copied to userland with flags and
pad fields unitialized. It leads to leaking of contents of
kernel stack memory.
Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 2f87a1627f6c..38f756f25053 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -617,6 +617,7 @@ long kvm_arch_vm_ioctl(struct file *filp, switch (ioctl) { case KVM_PPC_GET_PVINFO: { struct kvm_ppc_pvinfo pvinfo; + memset(&pvinfo, 0, sizeof(pvinfo)); r = kvm_vm_ioctl_get_pvinfo(&pvinfo); if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { r = -EFAULT; |