Race condition in the L2TPv3 IP Encapsulation feature in the Linux kernel before 4.8.14 allows local users to gain privileges or cause a denial of service (use-after-free) by making multiple bind system calls without properly ascertaining whether a socket has the SOCK_ZAPPED status, related to net/l2tp/l2tp_ip.c and net/l2tp/l2tp_ip6.c.
http://source.android.com/security/bulletin/2017-03-01.html
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
http://www.securityfocus.com/bid/101783
http://www.securitytracker.com/id/1037965
http://www.securitytracker.com/id/1037968
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:2437
https://access.redhat.com/errata/RHSA-2017:2444
https://github.com/torvalds/linux/commit/32c231164b762dddefa13af5a0101032c70b50ef
Source: MITRE
Published: 2017-03-07
Updated: 2018-01-05
Type: CWE-264
Base Score: 6.9
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 7
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1
Severity: HIGH