From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Sun, 30 Jul 2023 12:06:06 +0000 (+0200)
Subject: efi_loader: catch out of memory in file_open
X-Git-Url: https://repo.jachan.dev/J-u-boot.git/commitdiff_plain/405b736e817bbca360b2fd3329953d3980585df2

efi_loader: catch out of memory in file_open

If calloc() return NULL, don't dereference it.

Fixes: 2a92080d8c44 ("efi_loader: add file/filesys support")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
---

diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 3764a92b50f..3c56cebf965 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -195,6 +195,8 @@ static struct efi_file_handle *file_open(struct file_system *fs,
 
 	/* +2 is for null and '/' */
 	fh = calloc(1, sizeof(*fh) + plen + (flen * MAX_UTF8_PER_UTF16) + 2);
+	if (!fh)
+		return NULL;
 
 	fh->open_mode = open_mode;
 	fh->base = efi_file_handle_protocol;