diff mbox series

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

Message ID 20200305084041.24053-3-vdronov@redhat.com
State New
Headers show
Series efi: fix a race and add a sanity check | expand

Commit Message

Vladis Dronov March 5, 2020, 8:40 a.m. UTC 
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 mbox series

Patch

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;