From 90851a290a8b5c3d3937f013682015ce76306d95 Mon Sep 17 00:00:00 2001 From: Suchit Karunakaran Date: Sun, 27 Jul 2025 22:14:33 +0530 Subject: [PATCH] kconfig: lxdialog: replace strcpy() with strncpy() in inputbox.c [ Upstream commit 5ac726653a1029a2eccba93bbe59e01fc9725828 ] strcpy() performs no bounds checking and can lead to buffer overflows if the input string exceeds the destination buffer size. This patch replaces it with strncpy(), and null terminates the input string. Signed-off-by: Suchit Karunakaran Reviewed-by: Nicolas Schier Signed-off-by: Masahiro Yamada Signed-off-by: Sasha Levin --- scripts/kconfig/lxdialog/inputbox.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/scripts/kconfig/lxdialog/inputbox.c b/scripts/kconfig/lxdialog/inputbox.c index 1dcfb288ee636..327b60cdb8dac 100644 --- a/scripts/kconfig/lxdialog/inputbox.c +++ b/scripts/kconfig/lxdialog/inputbox.c @@ -39,8 +39,10 @@ int dialog_inputbox(const char *title, const char *prompt, int height, int width if (!init) instr[0] = '\0'; - else - strcpy(instr, init); + else { + strncpy(instr, init, sizeof(dialog_input_result) - 1); + instr[sizeof(dialog_input_result) - 1] = '\0'; + } do_resize: if (getmaxy(stdscr) <= (height - INPUTBOX_HEIGTH_MIN)) -- 2.47.3