From: Nadav Amit <namit@cs.technion.ac.il>
Date: Mon, 13 Oct 2014 10:04:14 +0000 (+0300)
Subject: KVM: x86: PREFETCH and HINT_NOP should have SrcMem flag
X-Git-Tag: fixes-against-v3.18-rc2~9^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f6f1480d86bf9fc16c160d803ab1d006e3058d5;p=pandora-kernel.git

KVM: x86: PREFETCH and HINT_NOP should have SrcMem flag

The decode phase of the x86 emulator assumes that every instruction with the
ModRM flag, and which can be used with RIP-relative addressing, has either
SrcMem or DstMem.  This is not the case for several instructions - prefetch,
hint-nop and clflush.

Adding SrcMem|NoAccess for prefetch and hint-nop and SrcMem for clflush.

This fixes CVE-2014-8480.

Fixes: 41061cdb98a0bec464278b4db8e894a3121671f5
Cc: stable@vger.kernel.org
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

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