base_sock_create in drivers/isdn/mISDN/socket.c in the AF_ISDN network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-b91ee4aa2a21.
https://seclists.org/bugtraq/2019/Nov/11
https://usn.ubuntu.com/4184-1/
https://usn.ubuntu.com/4185-1/
https://usn.ubuntu.com/4186-1/
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html
https://usn.ubuntu.com/4185-2/
https://usn.ubuntu.com/4186-2/
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
Source: MITRE
Published: 2019-10-01
Updated: 2022-03-31
Type: CWE-862
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 3.3
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Impact Score: 1.4
Exploitability Score: 1.8
Severity: LOW