commit 3836d8dec894c415e88db8e1e565e6c3330fb126
author Kazuho Oku <kazuhooku@gmail.com> Mon Nov 28 14:11:00 2022 +0900
committer Kazuho Oku <kazuhooku@gmail.com> Mon Nov 28 14:11:00 2022 +0900
tree ae48089381a716ec94be5118e5fd97284d8a339c
parent 1e791dfe41ffd5a3f0e9fbbff2a8d779ea0bc767

here also

lib/picotls.c

diff --git a/lib/picotls.c b/lib/picotls.c
index 501cea6..1c747b4 100644
--- a/lib/picotls.c
+++ b/lib/picotls.c
@@ -3124,12 +3124,10 @@
     int ret = 0;
 
     ptls_decode_open_block(*src, end, 2, {
-        if (*src == end) {
-            ret = PTLS_ALERT_DECODE_ERROR;
-            goto Exit;
-        }
         do {
-            uint8_t type = *(*src)++;
+            uint8_t type;
+            if ((ret = ptls_decode8(&type, src, end)) != 0)
+                goto Exit;
             ptls_decode_open_block(*src, end, 2, {
                 switch (type) {
                 case PTLS_SERVER_NAME_TYPE_HOSTNAME: