Update from debian/bullseye-security for apertis/v2022-security

Backport of !31 (merged)

debian/patches/Add-a-negative-testcase-for-BN_mod_sqrt.patch

+From: Tomas Mraz <tomas@openssl.org>
+Date: Mon, 28 Feb 2022 18:26:35 +0100
+Subject: Add a negative testcase for BN_mod_sqrt
+
+---
+ test/bntest.c                          | 11 ++++++++++-
+ test/recipes/10-test_bn_data/bnmod.txt | 12 ++++++++++++
+ 2 files changed, 22 insertions(+), 1 deletion(-)
+
+diff --git a/test/bntest.c b/test/bntest.c
+index 97d08ac0be6b..2348d9fb5496 100644
+--- a/test/bntest.c
++++ b/test/bntest.c
+@@ -1614,8 +1614,17 @@ static int file_modsqrt(STANZA *s)
+             || !TEST_ptr(ret2 = BN_new()))
+         goto err;
+ 
++    if (BN_is_negative(mod_sqrt)) {
++        /* A negative testcase */
++        if (!TEST_ptr_null(BN_mod_sqrt(ret, a, p, ctx)))
++            goto err;
++
++        st = 1;
++        goto err;
++    }
++
+     /* There are two possible answers. */
+-    if (!TEST_true(BN_mod_sqrt(ret, a, p, ctx))
++    if (!TEST_ptr(BN_mod_sqrt(ret, a, p, ctx))
+             || !TEST_true(BN_sub(ret2, p, ret)))
+         goto err;
+ 
+diff --git a/test/recipes/10-test_bn_data/bnmod.txt b/test/recipes/10-test_bn_data/bnmod.txt
+index 5ea4d031f271..e28cc6bfb02e 100644
+--- a/test/recipes/10-test_bn_data/bnmod.txt
++++ b/test/recipes/10-test_bn_data/bnmod.txt
+@@ -2799,3 +2799,15 @@ P = 9df9d6cc20b8540411af4e5357ef2b0353cb1f2ab5ffc3e246b41c32f71e951f
+ ModSqrt = a1d52989f12f204d3d2167d9b1e6c8a6174c0c786a979a5952383b7b8bd186
+ A = 2eee37cf06228a387788188e650bc6d8a2ff402931443f69156a29155eca07dcb45f3aac238d92943c0c25c896098716baa433f25bd696a142f5a69d5d937e81
+ P = 9df9d6cc20b8540411af4e5357ef2b0353cb1f2ab5ffc3e246b41c32f71e951f
++
++# Negative testcases for BN_mod_sqrt()
++
++# This one triggers an infinite loop with unfixed implementation
++# It should just fail.
++ModSqrt = -1
++A = 20a7ee
++P = 460201
++
++ModSqrt = -1
++A = 65bebdb00a96fc814ec44b81f98b59fba3c30203928fa5214c51e0a97091645280c947b005847f239758482b9bfc45b066fde340d1fe32fc9c1bf02e1b2d0ed
++P = 9df9d6cc20b8540411af4e5357ef2b0353cb1f2ab5ffc3e246b41c32f71e951f