Description

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb

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/

https://www.debian.org/security/2018/dsa-4187

https://www.debian.org/security/2018/dsa-4188

Details

Risk Information

CVSS v2

CVSS v3