In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
http://seclists.org/oss-sec/2017/q2/602
https://www.debian.org/security/2017/dsa-3945
https://www.debian.org/security/2017/dsa-3927
http://www.securitytracker.com/id/1038787
Source: MITRE
Published: 2018-07-30
Updated: 2019-10-09
Type: CWE-190
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
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
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH