Re: [PATCH net] tuntap: fix use after free during release

2018-05-16 Thread David Miller
From: Jason Wang Date: Wed, 16 May 2018 20:39:33 +0800 > After commit b196d88aba8a ("tun: fix use after free for ptr_ring") we > need clean up tx ring during release(). But unfortunately, it tries to > do the cleanup blindly after socket were destroyed which will lead > another use-after-free. Fi

[PATCH net] tuntap: fix use after free during release

2018-05-16 Thread Jason Wang
After commit b196d88aba8a ("tun: fix use after free for ptr_ring") we need clean up tx ring during release(). But unfortunately, it tries to do the cleanup blindly after socket were destroyed which will lead another use-after-free. Fix this by doing the cleanup before dropping the last reference of