On Fri, Oct 18, 2024 at 9:00 AM Xia Chu <jiangmo9@xxxxxxxxx> wrote: > > Hi, > > We would like to report the following bug which has been found by our modified version of syzkaller. > > ====================================================== > description: KASAN: use-after-free Read in __nf_hook_entries_try_shrink > affected file: net/netfilter/core.c > kernel version: 5.8.0-rc4 > kernel commit: 0aea6d5c5be33ce94c16f9ab2f64de1f481f424b > git tree: upstream > kernel config: attached > crash reproducer: attached > ====================================================== > Crash log: > BUG: KASAN: use-after-free in hooks_validate net/netfilter/core.c:177 [inline] > BUG: KASAN: use-after-free in __nf_hook_entries_try_shrink+0x3c0/0x470 net/netfilter/core.c:260 > Read of size 4 at addr ffff888067fe4220 by task kworker/u4:2/126 > > CPU: 1 PID: 126 Comm: kworker/u4:2 Tainted: G W 5.8.0-rc4+ #1 This is an old version of linux, not supported. What do you expect from us ?
