Prohibit replacement of the PCMCIA Card Information Structure when the
kernel is locked down.
Suggested-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
cc: linux-pcmcia@xxxxxxxxxxxxxxxxxxx
---
drivers/pcmcia/cistpl.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c
index 55ef7d1fd8da..193e4f7b73b1 100644
--- a/drivers/pcmcia/cistpl.c
+++ b/drivers/pcmcia/cistpl.c
@@ -1578,6 +1578,11 @@ static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj,
struct pcmcia_socket *s;
int error;
+ if (kernel_is_locked_down()) {
+ pr_err("Direct CIS storage isn't permitted when the kernel is locked down\n");
+ return -EPERM;
+ }
+
s = to_socket(container_of(kobj, struct device, kobj));
if (off)
--
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