On 10/01/2018 11:58 AM, Steffen Klassert wrote:
> Since commit 222d7dbd258d ("net: prevent dst uses after free")
> skb_dst_force() might clear the dst_entry attached to the skb.
> The xfrm code don't expect this to happen, so we crash with
Doesn't.
> a NULL pointer dereference in this case. Fix it by checking
> skb_dst(skb) for NULL after skb_dst_force() and drop the packet
> in cast the dst_entry was cleared.
In case?
> Fixes: 222d7dbd258d ("net: prevent dst uses after free")
> Reported-by: Tobias Hommel <[email protected]>
> Reported-by: Kristian Evensen <[email protected]>
> Reported-by: Wolfgang Walter <[email protected]>
> Signed-off-by: Steffen Klassert <[email protected]>
[...]
MBR, Sergei
