Origin: https://github.com/OpenSC/OpenSC/commit/41d61da8481582e12710b5858f8b635e0a71ab5e
From: Jakub Jelen <jjelen@redhat.com>
Date: Wed, 20 Sep 2023 10:13:57 +0200
Subject: oberthur: Avoid buffer overflow

Thanks oss-fuzz

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=60650
CVE: CVE-2023-40661
Upstream-Status: Backport [https://salsa.debian.org/opensc-team/opensc/-/commit/8026fb4ca0ed53d970c6c497252eb264d4192d50]
Signed-off-by: Virendra Thakur <virendrak@kpit.com>
Comment: Hunk refreshed based on codebase.
---
 src/pkcs15init/pkcs15-oberthur.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/pkcs15init/pkcs15-oberthur.c b/src/pkcs15init/pkcs15-oberthur.c
index ad2cabd530..c441ab1e76 100644
--- a/src/pkcs15init/pkcs15-oberthur.c
+++ b/src/pkcs15init/pkcs15-oberthur.c
@@ -688,6 +688,9 @@
 	if (object->type != SC_PKCS15_TYPE_PRKEY_RSA)
 		LOG_TEST_RET(ctx, SC_ERROR_NOT_SUPPORTED, "Create key failed: RSA only supported");
 
+	if (key_info->path.len < 2)
+		LOG_TEST_RET(ctx, SC_ERROR_OBJECT_NOT_VALID, "The path needs to be at least to bytes long");
+
 	sc_log(ctx,  "create private key ID:%s",  sc_pkcs15_print_id(&key_info->id));
 	/* Here, the path of private key file should be defined.
 	 * Nevertheless, we need to instantiate private key to get the ACLs. */

