[PATCH v3 2/3] efi: add a sanity check to efivar_store_raw()

Vladis Dronov
2020-03-05T08:41:55Z

Add a sanity check to efivar_store_raw() the same way
efivar_{attr,size,data}_read() and efivar_show_raw() have it.

Signed-off-by: Vladis Dronov <vdronov@redhat.com>
---
drivers/firmware/efi/efivars.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index 69f13bc4b931..aff3dfb4d7ba 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -208,6 +208,9 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
u8 *data;
int err;

+ if (!entry || !buf)
+ return -EINVAL;
+
if (in_compat_syscall()) {
struct compat_efi_variable *compat;

--
2.20.1