HOMEVULNERABILITIESCVE-2019-18389
HIGH

CVE-2019-18389

CWE-787Published: December 23, 2019· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

A heap-based buffer overflow in the vrend_renderer_transfer_write_iov function in vrend_renderer.c in virglrenderer through 0.8.0 allows guest OS users to cause a denial of service, or QEMU guest-to-host escape and code execution, via VIRGL_CCMD_RESOURCE_INLINE_WRITE commands.

NVD Source

Technical Analysis

CVE-2019-18389 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

Debian1 product(s)
debian linux
openSUSE1 product(s)
leap
Red Hat1 product(s)
enterprise linux
virglrenderer_project1 product(s)
virglrenderer
Source: NVD CPE · 4 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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1765577
PATCHhttps://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921
PATCHhttps://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1765577
PATCHhttps://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921
PATCHhttps://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7d
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.html
ADVISORYhttps://access.redhat.com/security/cve/cve-2019-18389
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/12/msg00017.html
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.html
ADVISORYhttps://access.redhat.com/security/cve/cve-2019-18389
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/12/msg00017.html

All References (12)

→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.htmlMailing List · Third Party Advisory
→
https://access.redhat.com/security/cve/cve-2019-18389Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1765577Issue Tracking · Patch · Third Party Advisory
→
https://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921Patch · Third Party Advisory
→
https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7dPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/12/msg00017.htmlMailing List · Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00028.htmlMailing List · Third Party Advisory
→
https://access.redhat.com/security/cve/cve-2019-18389Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1765577Issue Tracking · Patch · Third Party Advisory
→
https://gitlab.freedesktop.org/virgl/virglrenderer/commit/cbc8d8b75be360236cada63784046688aeb6d921Patch · Third Party Advisory
→
https://gitlab.freedesktop.org/virgl/virglrenderer/merge_requests/314/diffs?commit_id=9c280a28651507e6ef87b17b90d47b6af3a4ab7dPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/12/msg00017.htmlMailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2019-18389
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected4 vendor(s)
PublishedDec 23, 2019

Related CVEs (CWE-787)

CVE-2016-9343
10.0
CVE-2018-6692
10.0
CVE-2015-5105
10.0
CVE-2015-5096
10.0
CVE-2015-5098
10.0
CVE-2018-2913
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-18389 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.COM. CVE data is provided under the NVD usage policy.
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