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ssh_known_hosts_get_algorithms: Simplify cleanup ...

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...  and prevent memory leak of host_port on memory allocation failure.

Thanks Xiaoke Wang for the report!

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Pavol Žáčik <pzacik@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Jakub Jelen
2025-11-24 18:05:36 +01:00
parent ee180c660e
commit 9d6df9d0fa
1 changed files with 11 additions and 17 deletions
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28
src/knownhosts.c
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@@ -376,25 +376,23 @@ struct ssh_list *ssh_known_hosts_get_algorithms(ssh_session session)
}
}
host_port = ssh_session_get_host_port(session);
if (host_port == NULL) {
return NULL;
}
list = ssh_list_new();
if (list == NULL) {
ssh_set_error_oom(session);
SAFE_FREE(host_port);
return NULL;
}
host_port = ssh_session_get_host_port(session);
if (host_port == NULL) {
goto error;
}
rc = ssh_known_hosts_read_entries(host_port,
session->opts.knownhosts,
&entry_list);
if (rc != 0) {
ssh_list_free(entry_list);
ssh_list_free(list);
return NULL;
SAFE_FREE(host_port);
goto error;
}
rc = ssh_known_hosts_read_entries(host_port,
@@ -402,21 +400,16 @@ struct ssh_list *ssh_known_hosts_get_algorithms(ssh_session session)
&entry_list);
SAFE_FREE(host_port);
if (rc != 0) {
ssh_list_free(entry_list);
ssh_list_free(list);
return NULL;
goto error;
}
if (entry_list == NULL) {
ssh_list_free(list);
return NULL;
goto error;
}
count = ssh_list_count(entry_list);
if (count == 0) {
ssh_list_free(list);
ssh_list_free(entry_list);
return NULL;
goto error;
}
for (it = ssh_list_get_iterator(entry_list);
@@ -460,6 +453,7 @@ struct ssh_list *ssh_known_hosts_get_algorithms(ssh_session session)
return list;
error:
ssh_list_free(entry_list);
ssh_list_free(list);
return NULL;
}