[PATCH 4.12 18/99] tipc: fix use-after-free

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Eric Dumazet [ Upstream commit 5bfd37b4de5c98e86b12bd13be5aa46c7484a125 ] syszkaller reported use-after-free in tipc [1] When msg->rep skb is freed, set the pointer to

[PATCH 4.12 18/99] tipc: fix use-after-free

4.12-stable review patch. If anyone has any objections, please let me know. -- From: Eric Dumazet [ Upstream commit 5bfd37b4de5c98e86b12bd13be5aa46c7484a125 ] syszkaller reported use-after-free in tipc [1] When msg->rep skb is freed, set the pointer to NULL, so that caller