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CVE-2018-20669

26
FAUCET Score

CVE-2018-20669 describes a critical vulnerability in the Linux kernel's i915 graphics driver, specifically affecting canonical and netapp products. A local attacker can exploit an unchecked address in i915_gem_execbuffer2_ioctl to overwrite arbitrary kernel memory. This flaw carries a CVSS score of 7.8 (High), indicating a low-complexity attack that can lead to Denial of Service or privilege escalation. While no public exploits or active exploitation have been observed, and community discussion is minimal, the potential for severe impact warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.13, < 4.14.185CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.129CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 83rd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt

Vendor Advisories (1)

redhatCVE-2018-20669Important

kernel: missing access_ok() checks in i915_gem_execbuffer2_ioctl() results in priviledge escalation

Jan 4, 2019

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
Release NotesVendor Advisory
lists.opensuse.org / opensuse-security-announce/2019-02/msg00042.html
Mailing ListThird Party Advisory
access.redhat.com / security/cve/cve-2018-20669
Third Party Advisory
security.netapp.com / advisory/ntap-20190404-0002
Third Party Advisory
support.f5.com / csp/article/K32059550
Third Party Advisory
usn.ubuntu.com / 4485-1
Third Party Advisory
openwall.com / lists/oss-security/2019/01/23/6
ExploitMailing ListPatchThird Party Advisory
securityfocus.com / bid/106748
Broken LinkThird Party AdvisoryVDB Entry