From 642a9e716e1e4ecfa64e01a81e815b74e9c142bf Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 16 Nov 2025 12:41:53 +0100 Subject: [PATCH] cmd/extension: avoid NULL pointer dereference extension_get_list() will return NULL if there is no extension device. Check for this situation. Addresses-Coverity-ID: 638557 - Null pointer dereferences (NULL_RETURNS) Fixes: 2d12958ee71b ("boot: Remove legacy extension board support") Signed-off-by: Heinrich Schuchardt Acked-by: Kory Maincent --- cmd/extension_board.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/cmd/extension_board.c b/cmd/extension_board.c index 86e4795ba8a..75358abf666 100644 --- a/cmd/extension_board.c +++ b/cmd/extension_board.c @@ -99,6 +99,10 @@ static int do_extension_list(struct cmd_tbl *cmdtp, int flag, int i = 0; extension_list = extension_get_list(); + if (!extension_list) { + printf("No extension device\n"); + return CMD_RET_FAILURE; + } if (!alist_get_ptr(extension_list, 0)) { printf("No extension registered - Please run \"extension scan\"\n"); return CMD_RET_SUCCESS; -- 2.47.3