CVE-2018-1066
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…
Does this matter?
Lower severity and a low EPSS score (3.44%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 3.44% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · debian/debian linux · canonical/ubuntu linux
- Source
- secalert@redhat.com
EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebbPatch, Vendor Advisory
- http://www.securityfocus.com/bid/103378Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1539599Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebbPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlMailing List, Third Party Advisory
- https://patchwork.kernel.org/patch/10187633/Patch, Third Party Advisory
- https://usn.ubuntu.com/3880-1/Third Party Advisory
- https://usn.ubuntu.com/3880-2/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
- https://www.debian.org/security/2018/dsa-4188Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebbPatch, Vendor Advisory
- http://www.securityfocus.com/bid/103378Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1539599Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebbPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00016.htmlMailing List, Third Party Advisory
- https://patchwork.kernel.org/patch/10187633/Patch, Third Party Advisory
- https://usn.ubuntu.com/3880-1/Third Party Advisory
- https://usn.ubuntu.com/3880-2/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4187Third Party Advisory
- https://www.debian.org/security/2018/dsa-4188Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.