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| author | Shankari Anand <shankari.ak0208@gmail.com> | 2025-06-25 22:06:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 17:26:02 +0300 |
| commit | cd22e2f93157ac12ca3f26285775d38d8b1ace62 (patch) | |
| tree | 73b9ddcd57a64f65c3b23304953cac8a649ad8ad /scripts | |
| parent | eeba1284f3c195872ba6d948feebee9e64ca044b (diff) | |
| download | linux-cd22e2f93157ac12ca3f26285775d38d8b1ace62.tar.xz | |
kconfig: nconf: Ensure null termination where strncpy is used
[ Upstream commit f468992936894c9ce3b1659cf38c230d33b77a16 ]
strncpy() does not guarantee null-termination if the source string is
longer than the destination buffer.
Ensure the buffer is explicitly null-terminated to prevent potential
string overflows or undefined behavior.
Signed-off-by: Shankari Anand <shankari.ak0208@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Nicolas Schier <n.schier@avm.de>
Acked-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/kconfig/nconf.c | 2 | ||||
| -rw-r--r-- | scripts/kconfig/nconf.gui.c | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c index 3ba8b1af390f..16a2db59432a 100644 --- a/scripts/kconfig/nconf.c +++ b/scripts/kconfig/nconf.c @@ -585,6 +585,8 @@ static void item_add_str(const char *fmt, ...) tmp_str, sizeof(k_menu_items[index].str)); + k_menu_items[index].str[sizeof(k_menu_items[index].str) - 1] = '\0'; + free_item(curses_menu_items[index]); curses_menu_items[index] = new_item( k_menu_items[index].str, diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c index 9aedf40f1dc0..da06ea2afe08 100644 --- a/scripts/kconfig/nconf.gui.c +++ b/scripts/kconfig/nconf.gui.c @@ -349,6 +349,7 @@ int dialog_inputbox(WINDOW *main_window, x = (columns-win_cols)/2; strncpy(result, init, *result_len); + result[*result_len - 1] = '\0'; /* create the windows */ win = newwin(win_lines, win_cols, y, x); |