From 28e84ab3abafb0f9c9573993626abe6ca3fa8eb1 Mon Sep 17 00:00:00 2001 From: "Robert T. Johnson" Date: Mon, 16 Jun 2008 17:20:52 -0700 Subject: [PATCH] atm: [he] limit queries to the device's register space From: "Robert T. Johnson" Signed-off-by: Chas Williams --- drivers/atm/he.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/atm/he.c b/drivers/atm/he.c index 320320e3dfb..fc636a3429c 100644 --- a/drivers/atm/he.c +++ b/drivers/atm/he.c @@ -2845,10 +2845,15 @@ he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) if (copy_from_user(®, arg, sizeof(struct he_ioctl_reg))) return -EFAULT; - + spin_lock_irqsave(&he_dev->global_lock, flags); switch (reg.type) { case HE_REGTYPE_PCI: + if (reg.addr < 0 || reg.addr >= HE_REGMAP_SIZE) { + err = -EINVAL; + break; + } + reg.val = he_readl(he_dev, reg.addr); break; case HE_REGTYPE_RCM: -- 2.41.1