Squashed 'yocto-poky/' content from commit ea562de

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diff --git a/meta/recipes-support/gnupg/gnupg-1.4.7/CVE-2013-4242.patch b/meta/recipes-support/gnupg/gnupg-1.4.7/CVE-2013-4242.patch
new file mode 100644
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--- /dev/null
+++ b/meta/recipes-support/gnupg/gnupg-1.4.7/CVE-2013-4242.patch
@@ -0,0 +1,62 @@
+From e2202ff2b704623efc6277fb5256e4e15bac5676 Mon Sep 17 00:00:00 2001
+From: Werner Koch <wk@gnupg.org>
+Date: Thu, 25 Jul 2013 11:17:52 +0200
+Subject: [PATCH] Mitigate a flush+reload cache attack on RSA secret
+ exponents.
+
+commit e2202ff2b704623efc6277fb5256e4e15bac5676 from
+git://git.gnupg.org/libgcrypt.git
+
+* mpi/mpi-pow.c (gcry_mpi_powm): Always perfrom the mpi_mul for
+exponents in secure memory.
+
+Upstream-Status: Backport
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+--
+
+The attack is published as http://eprint.iacr.org/2013/448 :
+
+Flush+Reload: a High Resolution, Low Noise, L3 Cache Side-Channel
+Attack by Yuval Yarom and Katrina Falkner. 18 July 2013.
+
+  Flush+Reload is a cache side-channel attack that monitors access to
+  data in shared pages. In this paper we demonstrate how to use the
+  attack to extract private encryption keys from GnuPG.  The high
+  resolution and low noise of the Flush+Reload attack enables a spy
+  program to recover over 98% of the bits of the private key in a
+  single decryption or signing round. Unlike previous attacks, the
+  attack targets the last level L3 cache. Consequently, the spy
+  program and the victim do not need to share the execution core of
+  the CPU. The attack is not limited to a traditional OS and can be
+  used in a virtualised environment, where it can attack programs
+  executing in a different VM.
+
+Index: gnupg-1.4.7/mpi/mpi-pow.c
+===================================================================
+--- gnupg-1.4.7.orig/mpi/mpi-pow.c
++++ gnupg-1.4.7/mpi/mpi-pow.c
+@@ -212,7 +212,13 @@ mpi_powm( MPI res, MPI base, MPI exponen
+ 		tp = rp; rp = xp; xp = tp;
+ 		rsize = xsize;
+ 
+-		if( (mpi_limb_signed_t)e < 0 ) {
++            /* To mitigate the Yarom/Falkner flush+reload cache
++             * side-channel attack on the RSA secret exponent, we do
++             * the multiplication regardless of the value of the
++             * high-bit of E.  But to avoid this performance penalty
++             * we do it only if the exponent has been stored in secure
++             * memory and we can thus assume it is a secret exponent.  */
++		if (esec || (mpi_limb_signed_t)e < 0) {
+ 		    /*mpihelp_mul( xp, rp, rsize, bp, bsize );*/
+ 		    if( bsize < KARATSUBA_THRESHOLD ) {
+ 			mpihelp_mul( xp, rp, rsize, bp, bsize );
+@@ -227,6 +233,8 @@ mpi_powm( MPI res, MPI base, MPI exponen
+ 			mpihelp_divrem(xp + msize, 0, xp, xsize, mp, msize);
+ 			xsize = msize;
+ 		    }
++		}
++		if ( (mpi_limb_signed_t)e < 0 ) {
+ 
+ 		    tp = rp; rp = xp; xp = tp;
+ 		    rsize = xsize;