The function hso_get_config_data in drivers/net/usb/hso.c in the Linux kernel through 4.19.8 reads if_num from the USB device (as a u8) and uses it to index a small array, resulting in an object out-of-bounds (OOB) read that potentially allows arbitrary read in the kernel address space.
http://lists.opensuse.org/opensuse-security-announce/2019-01/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00007.html
https://hexhive.epfl.ch/projects/perifuzz/
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
https://seclists.org/bugtraq/2019/Jan/52
https://security.netapp.com/advisory/ntap-20190404-0002/
Source: MITRE
Published: 2019-03-21
Updated: 2019-09-03
Type: CWE-125
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 4.6
Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 0.9
Severity: MEDIUM