linedit: fix use-after-free
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 3e16f64..a68e5a3 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1357,6 +1357,7 @@
*/
int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, line_input_t *st)
{
+ int len;
#if ENABLE_FEATURE_TAB_COMPLETION
smallint lastWasTab = FALSE;
#endif
@@ -1376,7 +1377,6 @@
|| !(initial_settings.c_lflag & ECHO)
) {
/* Happens when e.g. stty -echo was run before */
- int len;
parse_and_put_prompt(prompt);
fflush(stdout);
if (fgets(command, maxsize, stdin) == NULL)
@@ -1843,9 +1843,10 @@
signal(SIGWINCH, previous_SIGWINCH_handler);
fflush(stdout);
+ len = command_len;
DEINIT_S();
- return command_len;
+ return len; /* can't return command_len, DEINIT_S() destroys it */
}
line_input_t* FAST_FUNC new_line_input_t(int flags)