KVM: x86: Catch potential overrun in MCE setup (a9e38c3e) · Commits · Mirrors / git.yoctoproject.org / linux-yocto

Commit a9e38c3e authored Oct 23, 2009 by

Jan Kiszka Committed by Marcelo Tosatti Nov 04, 2009

KVM: x86: Catch potential overrun in MCE setup



We only allocate memory for 32 MCE banks (KVM_MAX_MCE_BANKS) but we
allow user space to fill up to 255 on setup (mcg_cap & 0xff), corrupting
kernel memory. Catch these overflows.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

parent 51bb296b

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