3.13-stable review patch. If anyone has any objections, please let me know.
------------------ From: Antonio Quartulli <[email protected]> [ Upstream commit f1791425cf0bcda43ab9a9a37df1ad3ccb1f6654 ] pskb_may_pull() returns 1 on success and 0 in case of failure, therefore checking for the return value being negative does not make sense at all. This way if the function fails we will probably read beyond the current skb data buffer. Fix this by doing the proper check. Signed-off-by: Antonio Quartulli <[email protected]> Signed-off-by: Marek Lindner <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/batman-adv/routing.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -833,7 +833,7 @@ static int batadv_check_unicast_ttvn(str int is_old_ttvn; /* check if there is enough data before accessing it */ - if (pskb_may_pull(skb, hdr_len + ETH_HLEN) < 0) + if (!pskb_may_pull(skb, hdr_len + ETH_HLEN)) return 0; /* create a copy of the skb (in case of for re-routing) to modify it. */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
