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add 0027-FIPS-slh_dsa.patch #13

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add 0027-FIPS-slh_dsa.patch #13

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34 changes: 34 additions & 0 deletions upstream_patches/0027-FIPS-slh_dsa.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
commit 434e9dda51fb8bf8944060550b2f613160c855d9
Author: nkraetzschmar <9020053+nkraetzschmar@users.noreply.github.com>
Date: Mon Jun 1 16:37:00 2026 +0200

slh_dsa: zeroize intermediate buffers

diff --git a/crypto/slh_dsa/slh_dsa.c b/crypto/slh_dsa/slh_dsa.c
index 77c20daceb..6164237572 100644
--- a/crypto/slh_dsa/slh_dsa.c
+++ b/crypto/slh_dsa/slh_dsa.c
@@ -124,6 +124,11 @@ static int slh_sign_internal(SLH_DSA_HASH_CTX *hctx,
err:
if (!WPACKET_finish(wpkt))
ret = 0;
+ OPENSSL_cleanse(m_digest, sizeof(m_digest));
+ OPENSSL_cleanse(pk_fors, sizeof(pk_fors));
+ OPENSSL_cleanse(adrs, sizeof(adrs));
+ OPENSSL_cleanse(&tree_id, sizeof(tree_id));
+ OPENSSL_cleanse(&leaf_id, sizeof(leaf_id));
return ret;
}

diff --git a/crypto/slh_dsa/slh_dsa_key.c b/crypto/slh_dsa/slh_dsa_key.c
index 2fa59a6598..edeb18e33b 100644
--- a/crypto/slh_dsa/slh_dsa_key.c
+++ b/crypto/slh_dsa/slh_dsa_key.c
@@ -393,6 +393,7 @@ err:
out->pub = NULL;
out->has_priv = 0;
OPENSSL_cleanse(priv, secret_key_len);
+ OPENSSL_cleanse(pub, ossl_slh_dsa_key_get_pub_len(out));
return 0;
}

1 change: 1 addition & 0 deletions upstream_patches/series
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Original file line number Diff line number Diff line change
Expand Up @@ -27,3 +27,4 @@ Avoid-possible-buffer-overflow-in-buf2hex-conversion.patch
rsa_kem-validate-RSA_public_encrypt-result-in-RSASVE.patch
rsa_kem-test-RSA_public_encrypt-result-in-RSASVE.patch
0026-FIPS-ML-DSA-SEED-indicator.patch
0027-FIPS-slh_dsa.patch
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