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-rw-r--r--drivers/isdn/mISDN/dsp_core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c
index 22b720ec80c..77025f5cb57 100644
--- a/drivers/isdn/mISDN/dsp_core.c
+++ b/drivers/isdn/mISDN/dsp_core.c
@@ -288,8 +288,10 @@ dsp_control_req(struct dsp *dsp, struct mISDNhead *hh, struct sk_buff *skb)
u8 *data;
int len;
- if (skb->len < sizeof(int))
+ if (skb->len < sizeof(int)) {
printk(KERN_ERR "%s: PH_CONTROL message too short\n", __func__);
+ return -EINVAL;
+ }
cont = *((int *)skb->data);
len = skb->len - sizeof(int);
data = skb->data + sizeof(int);