CVE-2018-20669

Name: CVE-2018-20669
Creator: NVD / NIST
Published: 2019-03-21T16:00:37.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2018-20669 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the Linux kernel through 4.19.13. A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

An issue where a provided address with access_ok() is not checked was discovered in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c in the Linux kernel through 4.19.13. A local attacker can craft a malicious IOCTL function call to overwrite arbitrary kernel memory, resulting in a Denial of Service or privilege escalation.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 4.13, < 4.14.185
Linux	Linux Kernel	>= 4.15, < 4.19.129
Linux	Linux Kernel	>= 4.20, < 5.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Netapp	Hci Management Node	All versions
Netapp	Snapprotect	All versions
Netapp	Solidfire	All versions
Netapp	Cn1610 Firmware	All versions

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.cRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/01/23/6Exploit, Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/106748Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2018-20669Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0002/Third Party Advisory
https://support.f5.com/csp/article/K32059550Third Party Advisory
https://usn.ubuntu.com/4485-1/Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.cRelease Notes, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/01/23/6Exploit, Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/106748Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2018-20669Third Party Advisory
https://security.netapp.com/advisory/ntap-20190404-0002/Third Party Advisory
https://support.f5.com/csp/article/K32059550Third Party Advisory
https://usn.ubuntu.com/4485-1/Third Party Advisory

Timeline

Published: Mar 21, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20669?

How severe is CVE-2018-20669?

CVE-2018-20669 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20669?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20669?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST