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TI-2018-00986 Aliases CVE-2018-1066GHSA-32qx-3229-j5m2

NULL pointer dereference in Linux kernel 4.11

Priority LOW 35CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 8 fixed, 2 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

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.

Why it matters now

EPSS 0.03435 89th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux kernel 4.11Linux kernel 4.11—No fix listedCNA
  • Linux kernel 4.11 Vendor— Affected Linux kernel 4.11 Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.10.15VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.10.15 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical

Remediation

Red Hat 1 advisory

  • RHSA-2018:1062 Released 2018-04-10 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-bootwrapper-3.10.0-862.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-862.el7, kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise MRG 2AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:1062
Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-1066
  2. 2026-10-03 Alias added: GHSA-32qx-3229-j5m2

References

Patch 3

Advisory 7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences