From: Vladis Dronov vdronov@redhat.com
commit d6c066fda90d578aacdf19771a027ed484a79825 upstream.
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 Signed-off-by: Ard Biesheuvel ardb@kernel.org Signed-off-by: Ingo Molnar mingo@kernel.org Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200305084041.24053-3-vdronov@redhat.com Link: https://lore.kernel.org/r/20200308080859.21568-25-ardb@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.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 c868849..1c65f5ac 100644 --- a/drivers/firmware/efi/efivars.c +++ b/drivers/firmware/efi/efivars.c @@ -272,6 +272,9 @@ static inline bool is_compat(void) u8 *data; int err;
+ if (!entry || !buf) + return -EINVAL; + if (is_compat()) { struct compat_efi_variable *compat;