+CC linux-kernel@xxxxxxxxxxxxxxx and linux-fsdevel@xxxxxxxxxxxxxxx mail list. On 2022/1/28 10:09, yebin wrote: > Hi, AL. > I'm sorry to bother you. > Now there is a CVE(CVE-2021-39634) which discription is "In fs/eventpoll.c, there is a possible use after free". > The information disclosed now shows that fix patch is "epoll: do not insert into poll queues until all > sanity checks are done" which you submitted. > According to the patch modification, I reverse analyze how to generate use-after-free .After analysis for several days, > I tried to reproduce it, but I didn't find any use-after-free. > Do you have any suggestions for the use-after-free described by CVE-2021-39634?
