[openssl] OpenSSL_1_1_1-stable update

tmraz at fedoraproject.org tmraz at fedoraproject.org
Thu Oct 29 16:20:29 UTC 2020

The branch OpenSSL_1_1_1-stable has been updated
       via  5795acffd8706e1cb584284ee5bb3a30986d0e75 (commit)
      from  8979ffee95043baffa51887b1d43d9b07f9fae1b (commit)

- Log -----------------------------------------------------------------
commit 5795acffd8706e1cb584284ee5bb3a30986d0e75
Author: Ard Biesheuvel <ard.biesheuvel at arm.com>
Date:   Tue Oct 27 18:02:40 2020 +0100

    crypto/poly1305/asm: fix armv8 pointer authentication
    PAC pointer authentication signs the return address against the value
    of the stack pointer, to prevent stack overrun exploits from corrupting
    the control flow. However, this requires that the AUTIASP is issued with
    SP holding the same value as it held when the PAC value was generated.
    The Poly1305 armv8 code got this wrong, resulting in crashes on PAC
    capable hardware.
    Reviewed-by: Paul Dale <paul.dale at oracle.com>
    Reviewed-by: Tomas Mraz <tmraz at fedoraproject.org>
    (Merged from https://github.com/openssl/openssl/pull/13256)
    (cherry picked from commit fcf6e9d056162d5af64c6f7209388a5c3be2ce57)


Summary of changes:
 crypto/poly1305/asm/poly1305-armv8.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/poly1305/asm/poly1305-armv8.pl b/crypto/poly1305/asm/poly1305-armv8.pl
index d07494bd18..2a42b64a92 100755
--- a/crypto/poly1305/asm/poly1305-armv8.pl
+++ b/crypto/poly1305/asm/poly1305-armv8.pl
@@ -864,8 +864,8 @@ poly1305_blocks_neon:
 	st1	{$ACC4}[0],[$ctx]
-	.inst	0xd50323bf		// autiasp
 	ldr	x29,[sp],#80
+	.inst	0xd50323bf		// autiasp
 .size	poly1305_blocks_neon,.-poly1305_blocks_neon

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