X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=common%2Fcmd_pxe.c;h=7e32c95df3217bc575dd39be2a71fd3f6e0deea3;hb=9525bbacf23caa1d39a21ced0dd44f9a559373fa;hp=0ab1e0aaa63fa13e8b60a78ea3b7fb1a9698b293;hpb=7f14fb20f895016fb38d30ce71aeb4d441b5bcb8;p=karo-tx-uboot.git

diff --git a/common/cmd_pxe.c b/common/cmd_pxe.c
index 0ab1e0aaa6..7e32c95df3 100644
--- a/common/cmd_pxe.c
+++ b/common/cmd_pxe.c
@@ -674,6 +674,15 @@ static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
 		char bootargs[CONFIG_SYS_CBSIZE] = "";
 		char finalbootargs[CONFIG_SYS_CBSIZE];
 
+		if (strlen(label->append ?: "") +
+		    strlen(ip_str) + strlen(mac_str) + 1 > sizeof(bootargs)) {
+			printf("bootarg overflow %zd+%zd+%zd+1 > %zd\n",
+			       strlen(label->append ?: ""),
+			       strlen(ip_str), strlen(mac_str),
+			       sizeof(bootargs));
+			return 1;
+		}
+
 		if (label->append)
 			strcpy(bootargs, label->append);
 		strcat(bootargs, ip_str);