HOMEVULNERABILITIESCVE-2018-20669
HIGH

CVE-2018-20669

CWE-20Published: March 21, 2019· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2018-20669 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Linux1 product(s)
linux kernel
netapp5 product(s)
hci management nodesnapprotectsolidfirecn1610 firmwarecn1610
Source: NVD CPE · 9 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2019/01/23/6
PATCHhttp://www.openwall.com/lists/oss-security/2019/01/23/6
ADVISORYhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
ADVISORYhttp://www.securityfocus.com/bid/106748
ADVISORYhttps://access.redhat.com/security/cve/cve-2018-20669
ADVISORYhttps://security.netapp.com/advisory/ntap-20190404-0002/
ADVISORYhttps://support.f5.com/csp/article/K32059550
ADVISORYhttps://usn.ubuntu.com/4485-1/
ADVISORYhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/i915/i915_gem_execbuffer.c
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2019-02/msg00042.html
ADVISORYhttp://www.securityfocus.com/bid/106748
ADVISORYhttps://access.redhat.com/security/cve/cve-2018-20669
ADVISORYhttps://security.netapp.com/advisory/ntap-20190404-0002/
ADVISORYhttps://support.f5.com/csp/article/K32059550
ADVISORYhttps://usn.ubuntu.com/4485-1/

All References (16)

→
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

Quick Facts

CVE IDCVE-2018-20669
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected3 vendor(s)
PublishedMar 21, 2019

Related CVEs (CWE-20)

CVE-2003-1425
10.0
CVE-2007-6176
10.0
CVE-2007-6494
10.0
CVE-2008-6826
10.0
CVE-2008-1331
10.0
CVE-2008-6555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-20669 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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