The sunxi-debug driver in Allwinner 3.4 legacy kernel for H3, A83T and H8 devices allows local users to gain root privileges by sending "rootmydevice" to /proc/sunxi_debug/sunxi_debug.
https://irclog.whitequark.org/linux-sunxi/2016-04-29#16314390
https://forum.armbian.com/index.php?/topic/1108-security-alert-for-allwinner-sun8i-h3a83th8/
http://www.securityfocus.com/bid/93442
http://www.openwall.com/lists/oss-security/2017/02/15/9
http://www.openwall.com/lists/oss-security/2016/10/05/16
Source: Mitre, NVD
Published: 2017-03-27
Updated: 2025-04-20
Base Score: 7.2
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Severity: High
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.06061