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 3764a92..3c56ceb 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -195,6 +195,8 @@
/* +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;