From e154cba1b3fc52bb8cb8aa846353c0db79b5d9c6 Mon Sep 17 00:00:00 2001
From: JerikoOne <jeriko.one@gmx.us>
Date: Fri, 13 Jul 2018 10:47:11 -0700
Subject: [PATCH] Ensure UID in fetch_uidl.

---
 pop.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pop.c b/pop.c
index ecfd8d7c..d9d95fbe 100644
--- a/pop.c
+++ b/pop.c
@@ -152,6 +152,10 @@ static int fetch_uidl (char *line, void *data)
       endp++;
   memmove(line, endp, strlen(endp) + 1);
 
+  /* uid must be at least be 1 byte */
+  if (strlen(line) == 0)
+    return -1;
+
   for (i = 0; i < ctx->msgcount; i++)
     if (!mutt_strcmp (line, ctx->hdrs[i]->data))
       break;
-- 
2.40.0