From: Philippe Reynes <philippe.reynes@softathome.com>
Date: Fri, 15 Oct 2021 09:28:47 +0000 (+0200)
Subject: lib: rsa: rsa-verify: also check that padding is not NULL
X-Git-Tag: v2022.01-rc1~11^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b560c704d66edf30c32c2a588bc1d177750bb418;p=pandora-u-boot.git

lib: rsa: rsa-verify: also check that padding is not NULL

This commit adds a check on the padding in the function rsa_verify_key
to avoid using a NULL pointer.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c
index 600c93ab810..83f7564101c 100644
--- a/lib/rsa/rsa-verify.c
+++ b/lib/rsa/rsa-verify.c
@@ -340,7 +340,7 @@ static int rsa_verify_key(struct image_sign_info *info,
 	struct padding_algo *padding = info->padding;
 	int hash_len;
 
-	if (!prop || !sig || !hash || !checksum)
+	if (!prop || !sig || !hash || !checksum || !padding)
 		return -EIO;
 
 	if (sig_len != (prop->num_bits / 8)) {