1 When ss is invoked with the no-header flag, if the query doesn't return
2 any result, render() is called with 'buffer' uninitialized. This
3 currently leads to a segfault. Ensure that buffer is initialized before
6 The bug can be triggered with: ss -H sport = 100000
8 Signed-off-by: Jean-Philippe Brucker <jphilippe.brucker@xxxxxxxxx>
11 1 file changed, 6 insertions(+), 1 deletion(-)
13 diff --git a/misc/ss.c b/misc/ss.c
14 index e047f9c0..e087bef7 100644
17 @@ -1197,10 +1197,15 @@ newline:
18 /* Render buffered output with spacing and delimiters, then free up buffers */
19 static void render(int screen_width)
21 - struct buf_token *token = (struct buf_token *)buffer.head->data;
22 + struct buf_token *token;
23 int printed, line_started = 0;
29 + token = (struct buf_token *)buffer.head->data;
31 /* Ensure end alignment of last token, it wasn't necessarily flushed */
32 buffer.tail->end += buffer.cur->len % 2;