kernel is vulnerable to denial of service. A NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp()
allows an attacker who is controlling a CIFS server to cause a kernel panic in a client that has this server mounted, This is due to an empty TargetInfo field in an NTLMSSP setup negotiation response which is mishandled during session recovery.
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb
www.securityfocus.com/bid/103378
access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.5_Release_Notes/index.html
access.redhat.com/errata/RHSA-2018:1062
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1539599
github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb
lists.debian.org/debian-lts-announce/2018/07/msg00015.html
lists.debian.org/debian-lts-announce/2018/07/msg00016.html
patchwork.kernel.org/patch/10187633/
usn.ubuntu.com/3880-1/
usn.ubuntu.com/3880-2/
www.debian.org/security/2018/dsa-4187
www.debian.org/security/2018/dsa-4188