From: Antonio Quartulli ordex@autistici.org Date: Tue, 19 Jun 2012 21:26:39 +0200
skb_linearize(skb) possibly rearranges the skb internal data and then changes the skb->data pointer value. For this reason any other pointer in the code that was assigned skb->data before invoking skb_linearise(skb) must be re-assigned.
In the current tt_query message handling code this is not done and therefore, in case of skb linearization, the pointer used to handle the packet header ends up in pointing to free'd memory.
This bug was introduced by a73105b8d4c765d9ebfb664d0a66802127d8e4c7 (batman-adv: improved client announcement mechanism)
Signed-off-by: Antonio Quartulli ordex@autistici.org Cc: stable@vger.kernel.org
Applied.
Submit things properly in the future so you don't give me unnecessary merge hassles like this again.