| Date | Mon, 25 Mar 2019 15:09:44 -0700 | Subject | [PATCH 17/27] Prohibit PCMCIA CIS storage when the kernel is locked down | From | Matthew Garrett <> |
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From: David Howells <dhowells@redhat.com>
Prohibit replacement of the PCMCIA Card Information Structure when the kernel is locked down.
Suggested-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: David Howells <dhowells@redhat.com> cc: linux-pcmcia@lists.infradead.org Signed-off-by: Matthew Garrett <matthewgarrett@google.com> --- drivers/pcmcia/cistpl.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index ac0672b8dfca..8adf092d0e18 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -1578,6 +1578,9 @@ static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj, struct pcmcia_socket *s; int error; + if (kernel_is_locked_down("Direct PCMCIA CIS storage")) + return -EPERM; + s = to_socket(container_of(kobj, struct device, kobj)); if (off) -- 2.21.0.392.gf8f6787159e-goog
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