MEDIUM
crypto/mcryptd.c in the Linux kernel before 4.8.15 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an AF_ALG socket with an incompatible algorithm, as demonstrated by mcryptd(md5).
http://marc.info/?l=linux-crypto-vger&m=148063683310477&w=2
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.15
http://www.openwall.com/lists/oss-security/2017/01/17/13
http://www.securityfocus.com/bid/95677
https://access.redhat.com/errata/RHSA-2017:1842
https://access.redhat.com/errata/RHSA-2017:2077
https://bugzilla.redhat.com/show_bug.cgi?id=1404200
https://github.com/torvalds/linux/commit/48a992727d82cb7db076fa15d372178743b1f4cd
Source: MITRE
Published: 2017-01-18
Updated: 2018-01-05
Type: CWE-476
Base Score: 4.9
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM