potential null pointer dereference in drivers/isdn/hisax/isdnl2.c

[Jesper Juhl]

Hi,

In drivers/isdn/hisax/isdnl2.c:l2_pull_iqueue() we have this:

	...
		skb = alloc_skb(oskb->len + i, GFP_ATOMIC);
		memcpy(skb_put(skb, i), header, i);
	...

If alloc_skb() fails and returns NULL then the second line will cause a 
NULL pointer dereference - skb_put() gives the pointer to 
skb_tail_pointer() which dereferences it.

I'm not quite sure how this should be dealt with, so I'll just report it 
rather than submit a patch. Happy bug fixing :-)


-- 
Jesper Juhl <jj@xxxxxxxxxxxxx>            http://www.chaosbits.net/
Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
Plain text mails only, please.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/