From: Andrew Morton <akpm@osdl.org>
Date: Sun, 30 Oct 2005 23:03:02 +0000 (-0800)
Subject: [PATCH] setkeys needs root
X-Git-Tag: v2.6.15-rc1~59^2~15^2~58
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b360adbdb54d5b98b78d57ba0916bc4b8871968;p=linux-2.6

[PATCH] setkeys needs root

Because people can play games reprogramming keys and leaving traps for the
next user of the console.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 1d44f69e1f..003dda147c 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -192,6 +192,9 @@ do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 	int i, j, k;
 	int ret;
 
+	if (!capable(CAP_SYS_TTY_CONFIG))
+		return -EPERM;
+
 	kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
 	if (!kbs) {
 		ret = -ENOMEM;