From 06d39d79cbd5a91a33707951ebf2512d0e759847 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Sun, 13 Oct 2024 15:19:04 +0200 Subject: [PATCH] efi/libstub: Free correct pointer on failure cmdline_ptr is an out parameter, which is not allocated by the function itself, and likely points into the caller's stack. cmdline refers to the pool allocation that should be freed when cleaning up after a failure, so pass this instead to free_pool(). Fixes: 42c8ea3dca09 ("efi: libstub: Factor out EFI stub entrypoint ...") Cc: Signed-off-by: Ard Biesheuvel --- drivers/firmware/efi/libstub/efi-stub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c index f09e277ba2108..fc71dcab43e03 100644 --- a/drivers/firmware/efi/libstub/efi-stub.c +++ b/drivers/firmware/efi/libstub/efi-stub.c @@ -148,7 +148,7 @@ efi_status_t efi_handle_cmdline(efi_loaded_image_t *image, char **cmdline_ptr) return EFI_SUCCESS; fail_free_cmdline: - efi_bs_call(free_pool, cmdline_ptr); + efi_bs_call(free_pool, cmdline); return status; }