crypt-burn: Add sanity check for buffer length

This value is passed to chunk_alloc(), which LGTM complains about.
2020-03-02 17:36:33 +01:00 · 2020-03-02 17:36:33 +01:00 · 7a13246668
parent 1966f4332b
commit 7a13246668
1 changed files with 5 additions and 0 deletions
--- a/scripts/crypt_burn.c
+++ b/scripts/crypt_burn.c
@ -196,6 +196,11 @@ int main(int argc, char *argv[])
 	if (argc > 2)
 	{
 		len = atoi(argv[2]);
+		if (len > (2^30))
+		{
+			fprintf(stderr, "buffer too large (1 GiB limit)\n");
+			return 1;
+		}
 	}
 	if (argc > 3)
 	{