Messages in this thread | | | Date | Thu, 25 Nov 2021 13:25:55 -0400 | From | Jason Gunthorpe <> | Subject | Re: [PATCH] RDMA: fix use-after-free in rxe_queue_cleanup |
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On Sun, Nov 21, 2021 at 11:22:39PM +0300, Pavel Skripkin wrote: > On error handling path in rxe_qp_from_init() qp->sq.queue is freed and > then rxe_create_qp() will drop last reference to this object. qp clean > up function will try to free this queue one time and it causes UAF bug. > > Fix it by zeroing queue pointer after freeing queue in > rxe_qp_from_init(). > > Fixes: 514aee660df4 ("RDMA: Globally allocate and release QP memory") > Reported-by: syzbot+aab53008a5adf26abe91@syzkaller.appspotmail.com > Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> > Reviewed-by: Zhu Yanjun <zyjzyj2000@gmail.com> > --- > drivers/infiniband/sw/rxe/rxe_qp.c | 1 + > 1 file changed, 1 insertion(+)
Applied to for-next, thanks
Jason
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