1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c
index 9430eea7c0d6..ab4915c0d933 100644
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -355,6 +355,10 @@ static int chap_server_compute_md5(
                 pr_err("Unable to convert incoming challenge\n");
                 goto out;
         }
+        if (challenge_len > 1024) {
+                pr_err("CHAP_C exceeds maximum binary size of 1024 bytes\n");
+                goto out;
+        }
         /*
          * During mutual authentication, the CHAP_C generated by the
          * initiator must not match the original CHAP_C generated by