30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
From: David Howells <dhowells@redhat.com>
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Date: Wed, 8 Nov 2017 15:11:35 +0000
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Subject: [20/29] Prohibit PCMCIA CIS storage when the kernel is locked down
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Origin: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=18b2dfc74efeafbdbb8f5d4d28da6334b7e1f1ac
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Prohibit replacement of the PCMCIA Card Information Structure when the
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kernel is locked down.
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Suggested-by: Dominik Brodowski <linux@dominikbrodowski.net>
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Signed-off-by: David Howells <dhowells@redhat.com>
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cc: linux-pcmcia@lists.infradead.org
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---
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drivers/pcmcia/cistpl.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c
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index 55ef7d1fd8da..b7a0e42eeb25 100644
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--- a/drivers/pcmcia/cistpl.c
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+++ b/drivers/pcmcia/cistpl.c
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@@ -1578,6 +1578,9 @@ static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj,
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struct pcmcia_socket *s;
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int error;
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+ if (kernel_is_locked_down("Direct PCMCIA CIS storage"))
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+ return -EPERM;
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+
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s = to_socket(container_of(kobj, struct device, kobj));
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if (off)
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