From: Mark Andrews <marka@isc.org>
Date: Mon, 26 Sep 2022 01:57:17 +0000 (+1000)
Subject: Check that 'e' and 'n' are allocated in opensslrsa_fromdns
X-Git-Tag: v9.19.6~26^2~3
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=db70c302138f02b6e1fca6e89cf2da35b2ca0ae4;p=thirdparty%2Fbind9.git

Check that 'e' and 'n' are allocated in opensslrsa_fromdns
---

diff --git a/lib/dns/opensslrsa_link.c b/lib/dns/opensslrsa_link.c
index 64287854cc6..ce40ab1c318 100644
--- a/lib/dns/opensslrsa_link.c
+++ b/lib/dns/opensslrsa_link.c
@@ -692,6 +692,9 @@ opensslrsa_fromdns(dst_key_t *key, isc_buffer_t *data) {
 	e = BN_bin2bn(r.base, e_bytes, NULL);
 	isc_region_consume(&r, e_bytes);
 	n = BN_bin2bn(r.base, r.length, NULL);
+	if (e == NULL || n == NULL) {
+		DST_RET(ISC_R_NOMEMORY);
+	}
 
 	key->key_size = BN_num_bits(n);