missing copy_to_user check in tun driver.

PATCH New [email protected] 1 participant 1 message Aug 11, 2003

Subsystems (2)

Network drivers TUN/TAP driver

lore

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2003-08-11 16:14 UTC #0 lore raw

PATCH 1/1 missing copy_to_user check in tun driver.

drivers/net/tun.c +2 -1

diff -urpN --exclude-from=/home/davej/.exclude bk-linus/drivers/net/tun.c linux-2.5/drivers/net/tun.c
@@ -459,7 +459,8 @@ static int tun_chr_ioctl(struct inode *i
 		if (err)
 			return err;
 
-		copy_to_user((void *)arg, &ifr, sizeof(ifr));
+		if (copy_to_user((void *)arg, &ifr, sizeof(ifr)))
+			return -EFAULT;
 		return 0;
 	}