There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c.
5.13.0-19.194.13.0-16.194.13.0-17.204.13.0-25.294.13.0-32.354.15.0-10.114.15.0-12.134.15.0-13.144.15.0-15.164.15.0-19.204.15.0-20.21+37 more4.15.0-99.1006.11.0-8.83.11.0-12.193.12.0-1.33.12.0-2.53.12.0-2.73.12.0-3.83.12.0-3.93.12.0-4.103.12.0-4.123.12.0-5.133.12.0-7.15+170 more4.2.0-16.194.2.0-17.214.2.0-19.234.3.0-1.104.3.0-2.114.3.0-5.164.3.0-6.174.3.0-7.184.4.0-10.254.4.0-101.124+98 more4.4.0-178.2086.5.0-9.95.3.0-18.195.3.0-24.265.4.0-18.225.4.0-9.125.4.0-21.255.13.0-1005.65.3.0-1003.35.3.0-1008.95.3.0-1009.105.3.0-1010.115.4.0-1005.55.4.0-1007.74.4.0-1001.104.4.0-1003.124.4.0-1004.134.4.0-1007.164.4.0-1009.184.4.0-1011.204.4.0-1012.214.4.0-1013.224.4.0-1016.254.4.0-1017.26+56 more4.4.0-1106.117Exploitability
AV:LAC:LPR:LUI:NScope
S:UImpact
C:HI:NA:HCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H