HIGH
The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.
http://www.securityfocus.com/bid/103378
https://bugzilla.redhat.com/show_bug.cgi?id=1539599
https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html
https://patchwork.kernel.org/patch/10187633/
https://usn.ubuntu.com/3880-1/
https://usn.ubuntu.com/3880-2/
Source: MITRE
Published: 2018-03-02
Updated: 2019-04-23
Type: CWE-476
Base Score: 7.1
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 8.6
Severity: HIGH
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 2.8
Severity: MEDIUM