net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.
http://patchwork.ozlabs.org/patch/813945/
http://patchwork.ozlabs.org/patch/818726/
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
http://www.securityfocus.com/bid/101573
https://access.redhat.com/errata/RHSA-2018:0151
https://access.redhat.com/errata/RHSA-2018:0152
https://access.redhat.com/errata/RHSA-2018:0181
https://blogs.securiteam.com/index.php/archives/3484
https://github.com/torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110
https://github.com/torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
Source: MITRE
Published: 2017-10-19
Updated: 2018-08-24
Type: CWE-362
Base Score: 4.6
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 3.9
Severity: MEDIUM
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