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efi_loader: catch out of memory in file_open

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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>
This commit is contained in:
Heinrich Schuchardt 2023-07-30 14:06:06 +02:00
parent cff7700170
commit 405b736e81
1 changed files with 2 additions and 0 deletions
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2
lib/efi_loader/efi_file.c
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@ -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;