Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel before 4.6.3 allows local users to cause a denial of service (double free) or possibly have unspecified other impact via a crafted application that makes sendmsg system calls, leading to a free operation associated with a new dump that started earlier than anticipated.
https://github.com/torvalds/linux/commit/92964c79b357efd980812c4de5c1fd2ec8bb5520
https://bugzilla.redhat.com/show_bug.cgi?id=1401502
http://www.openwall.com/lists/oss-security/2016/12/03/4
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
http://lists.openwall.net/netdev/2016/05/15/69
http://www.securityfocus.com/bid/94653
https://source.android.com/security/bulletin/2017-03-01.html
http://www.securitytracker.com/id/1037968
https://access.redhat.com/errata/RHSA-2017:2669
Source: MITRE
Published: 2016-12-28
Updated: 2023-01-17
Type: CWE-362
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:3.1/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