From: Karel Zak <kzak@redhat.com>
Date: Tue, 22 Mar 2022 11:46:52 +0000 (+0100)
Subject: lib/buffer: fix possible SEGV
X-Git-Tag: v2.38~21
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cc9e5641acf0bd2100275c03c7e0f3e6c977df33;p=thirdparty%2Futil-linux.git

lib/buffer: fix possible SEGV

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/lib/buffer.c b/lib/buffer.c
index d1d608ff58..1dba7dd510 100644
--- a/lib/buffer.c
+++ b/lib/buffer.c
@@ -155,6 +155,9 @@ int ul_buffer_append_data(struct ul_buffer *buf, const char *data, size_t sz)
 
 int ul_buffer_append_string(struct ul_buffer *buf, const char *str)
 {
+	if (!str)
+		return 0;
+
 	return ul_buffer_append_data(buf, str, strlen(str));
 }