openssl: backport fix for CVE-2023-6129

(From OE-Core rev: 7fa10f29b31f8aae572026a00a6354aec539d044)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 114 insertions, 0 deletions

diff --git a/meta/recipes-connectivity/openssl/openssl/CVE-2023-6129.patch b/meta/recipes-connectivity/openssl/openssl/CVE-2023-6129.patch
new file mode 100644
index 0000000000..c2cbedd1b7
--- /dev/null
+++ b/meta/recipes-connectivity/openssl/openssl/CVE-2023-6129.patch
@@ -0,0 +1,113 @@
+From 5b139f95c9a47a55a0c54100f3837b1eee942b04 Mon Sep 17 00:00:00 2001
+From: Rohan McLure <rmclure@linux.ibm.com>
+Date: Thu, 4 Jan 2024 10:25:50 +0100
+Subject: [PATCH] poly1305-ppc.pl: Fix vector register clobbering
+
+Fixes CVE-2023-6129
+
+The POLY1305 MAC (message authentication code) implementation in OpenSSL for
+PowerPC CPUs saves the the contents of vector registers in different order
+than they are restored. Thus the contents of some of these vector registers
+is corrupted when returning to the caller. The vulnerable code is used only
+on newer PowerPC processors supporting the PowerISA 2.07 instructions.
+
+Reviewed-by: Matt Caswell <matt@openssl.org>
+Reviewed-by: Richard Levitte <levitte@openssl.org>
+Reviewed-by: Tomas Mraz <tomas@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/23200)
+
+(cherry picked from commit 8d847a3ffd4f0b17ee33962cf69c36224925b34f)
+
+CVE: CVE-2023-6129
+Upstream-Status: Backport
+Signed-off-by: Ross Burton <ross.burton@arm.com>
+---
+ crypto/poly1305/asm/poly1305-ppc.pl | 42 ++++++++++++++---------------
+ 1 file changed, 21 insertions(+), 21 deletions(-)
+
+diff --git a/crypto/poly1305/asm/poly1305-ppc.pl b/crypto/poly1305/asm/poly1305-ppc.pl
+index 9f86134d923fb..2e601bb9c24be 100755
+--- a/crypto/poly1305/asm/poly1305-ppc.pl
++++ b/crypto/poly1305/asm/poly1305-ppc.pl
+@@ -744,7 +744,7 @@
+ my $LOCALS= 6*$SIZE_T;
+ my $VSXFRAME = $LOCALS + 6*$SIZE_T;
+    $VSXFRAME += 128;   # local variables
+-   $VSXFRAME += 13*16; # v20-v31 offload
++   $VSXFRAME += 12*16; # v20-v31 offload
+ 
+ my $BIG_ENDIAN = ($flavour !~ /le/) ? 4 : 0;
+ 
+@@ -919,12 +919,12 @@
+        addi    r11,r11,32
+        stvx    v22,r10,$sp
+        addi    r10,r10,32
+-       stvx    v23,r10,$sp
+-       addi    r10,r10,32
+-       stvx    v24,r11,$sp
++       stvx    v23,r11,$sp
+        addi    r11,r11,32
+-       stvx    v25,r10,$sp
++       stvx    v24,r10,$sp
+        addi    r10,r10,32
++       stvx    v25,r11,$sp
++       addi    r11,r11,32
+        stvx    v26,r10,$sp
+        addi    r10,r10,32
+        stvx    v27,r11,$sp
+@@ -1153,12 +1153,12 @@
+        addi    r11,r11,32
+        stvx    v22,r10,$sp
+        addi    r10,r10,32
+-       stvx    v23,r10,$sp
+-       addi    r10,r10,32
+-       stvx    v24,r11,$sp
++       stvx    v23,r11,$sp
+        addi    r11,r11,32
+-       stvx    v25,r10,$sp
++       stvx    v24,r10,$sp
+        addi    r10,r10,32
++       stvx    v25,r11,$sp
++       addi    r11,r11,32
+        stvx    v26,r10,$sp
+        addi    r10,r10,32
+        stvx    v27,r11,$sp
+@@ -1899,26 +1899,26 @@
+        mtspr   256,r12                         # restore vrsave
+        lvx     v20,r10,$sp
+        addi    r10,r10,32
+-       lvx     v21,r10,$sp
+-       addi    r10,r10,32
+-       lvx     v22,r11,$sp
++       lvx     v21,r11,$sp
+        addi    r11,r11,32
+-       lvx     v23,r10,$sp
++       lvx     v22,r10,$sp
+        addi    r10,r10,32
+-       lvx     v24,r11,$sp
++       lvx     v23,r11,$sp
+        addi    r11,r11,32
+-       lvx     v25,r10,$sp
++       lvx     v24,r10,$sp
+        addi    r10,r10,32
+-       lvx     v26,r11,$sp
++       lvx     v25,r11,$sp
+        addi    r11,r11,32
+-       lvx     v27,r10,$sp
++       lvx     v26,r10,$sp
+        addi    r10,r10,32
+-       lvx     v28,r11,$sp
++       lvx     v27,r11,$sp
+        addi    r11,r11,32
+-       lvx     v29,r10,$sp
++       lvx     v28,r10,$sp
+        addi    r10,r10,32
+-       lvx     v30,r11,$sp
+-       lvx     v31,r10,$sp
++       lvx     v29,r11,$sp
++       addi    r11,r11,32
++       lvx     v30,r10,$sp
++       lvx     v31,r11,$sp
+        $POP    r27,`$VSXFRAME-$SIZE_T*5`($sp)
+        $POP    r28,`$VSXFRAME-$SIZE_T*4`($sp)
+        $POP    r29,`$VSXFRAME-$SIZE_T*3`($sp)
diff --git a/meta/recipes-connectivity/openssl/openssl_3.2.0.bb b/meta/recipes-connectivity/openssl/openssl_3.2.0.bb
index cf08cdbaa0..b2cdf761fc 100644
--- a/meta/recipes-connectivity/openssl/openssl_3.2.0.bb
+++ b/meta/recipes-connectivity/openssl/openssl_3.2.0.bb
@@ -14,6 +14,7 @@ SRC_URI = "http://www.openssl.org/source/openssl-${PV}.tar.gz \
            file://0001-Added-handshake-history-reporting-when-test-fails.patch \
            file://aarch64-bti.patch \
            file://0001-riscv-Fix-mispelling-of-extension-test-macro.patch \
+           file://CVE-2023-6129.patch \
            "
 
 SRC_URI:append:class-nativesdk = " \