diff options
Diffstat (limited to 'KVM-emulate-avoid-accessing-NULL-ctxt-memopp.patch')
| -rw-r--r-- | KVM-emulate-avoid-accessing-NULL-ctxt-memopp.patch | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/KVM-emulate-avoid-accessing-NULL-ctxt-memopp.patch b/KVM-emulate-avoid-accessing-NULL-ctxt-memopp.patch deleted file mode 100644 index 3aeacadc6..000000000 --- a/KVM-emulate-avoid-accessing-NULL-ctxt-memopp.patch +++ /dev/null @@ -1,37 +0,0 @@ -From: Paolo Bonzini <pbonzini@redhat.com> -Date: Fri, 24 Oct 2014 17:07:21 +0200 -Subject: [PATCH] KVM: emulate: avoid accessing NULL ctxt->memopp - -A failure to decode the instruction can cause a NULL pointer access. -This is fixed simply by moving the "done" label as close as possible -to the return. - -This fixes CVE-2014-8481. - -Reported-by: Andy Lutomirski <luto@amacapital.net> -Cc: stable@vger.kernel.org -Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5 -Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> ---- - arch/x86/kvm/emulate.c | 2 +- - 1 file changed, 1 insertion(+), 1 deletion(-) - -diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c -index 02c8ea804aaf..eb3b1c46f995 100644 ---- a/arch/x86/kvm/emulate.c -+++ b/arch/x86/kvm/emulate.c -@@ -4580,10 +4580,10 @@ done_prefixes: - /* Decode and fetch the destination operand: register or memory. */ - rc = decode_operand(ctxt, &ctxt->dst, (ctxt->d >> DstShift) & OpMask); - --done: - if (ctxt->rip_relative) - ctxt->memopp->addr.mem.ea += ctxt->_eip; - -+done: - return (rc != X86EMUL_CONTINUE) ? EMULATION_FAILED : EMULATION_OK; - } - --- -1.9.3 - |