crypto: bcm - Fix pointer arithmetic

jira LE-1907
cve CVE-2024-38579
Rebuild_History Non-Buildable kernel-4.18.0-553.22.1.el8_10
commit-author Aleksandr Mishin <[email protected]>
commit 2b3460c

In spu2_dump_omd() value of ptr is increased by ciph_key_len
instead of hash_iv_len which could lead to going beyond the
buffer boundaries.
Fix this bug by changing ciph_key_len to hash_iv_len.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 9d12ba8 ("crypto: brcm - Add Broadcom SPU driver")
	Signed-off-by: Aleksandr Mishin <[email protected]>
	Signed-off-by: Herbert Xu <[email protected]>
(cherry picked from commit 2b3460c)
	Signed-off-by: Jonathan Maple <[email protected]>

Author: PlaidCat

drivers/crypto/bcm/spu2.c

@@ -506,7 +506,7 @@ static void spu2_dump_omd(u8 *omd, u16 hash_key_len, u16 ciph_key_len,
 	if (hash_iv_len) {
 		packet_log("  Hash IV Length %u bytes\n", hash_iv_len);
 		packet_dump("  hash IV: ", ptr, hash_iv_len);
-		ptr += ciph_key_len;
+		ptr += hash_iv_len;
 	}
 
 	if (ciph_iv_len) {