From ad16eb112f4a9591acdf5f6f2981328613e6b626 Mon Sep 17 00:00:00 2001
From: "RELAUNCH DEPT." <215028820+ceodaradigu@users.noreply.github.com>
Date: Thu, 3 Sep 2026 15:51:41 +0200
Subject: [PATCH] publickey: initialize the list terminator

The allocation reserves `max_keys + 1` entries, while the initialization
after growth currently covers only `max_keys - keys` entries. Include
the additional reserved entry in that initialization so the list
terminator is initialized at exact capacity boundaries.

Follow-up to c2f1a3a21b4c922cbcf50bf7c009b740141a1e7a #2380
Ref: https://github.com/libssh2/libssh2/pull/2380#pullrequestreview-4746725158

Closes #2579
---
 src/publickey.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/publickey.c b/src/publickey.c
index d49ec48d38..36a60c141a 100644
--- a/src/publickey.c
+++ b/src/publickey.c
@@ -941,7 +941,8 @@ int libssh2_publickey_list_fetch(LIBSSH2_PUBLICKEY *pkey,
                     goto err_exit;
                 }
                 list = newlist;
-                memset(&list[keys], 0, (max_keys - keys) * sizeof(list[keys]));
+                memset(&list[keys], 0,
+                       (max_keys - keys + 1) * sizeof(list[keys]));
             }
             if(pkey->version == 1) {
                 unsigned long comment_len;