MEDIUM
CVE-2018-19364
CWE-416Published: December 13, 2018· Updated: Jun 17, 2026
5.5
CVSS v3.1
Official Description
hw/9pfs/cofile.c and hw/9pfs/9p.c in QEMU can modify an fid path while it is being accessed by a second thread, leading to (for example) a use-after-free outcome.
Technical Analysis
CVE-2018-19364 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 availability disruption (denial of service), with a CVSS base score of 5.5.
From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
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
ADVISORYhttps://usn.ubuntu.com/3826-1/
ADVISORYhttps://usn.ubuntu.com/3826-1/
All References (18)
→
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2018/11/20/1Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/01/msg00023.htmlMailing List · Third Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg01139.htmlMailing List · Patch · Vendor Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg02795.htmlMailing List · Patch · Vendor Advisory
→
https://seclists.org/bugtraq/2019/May/76Mailing List · Third Party Advisory
→
https://usn.ubuntu.com/3826-1/Third Party Advisory
→
https://www.debian.org/security/2019/dsa-4454Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2018/11/20/1Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/01/msg00023.htmlMailing List · Third Party Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg01139.htmlMailing List · Patch · Vendor Advisory
→
https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg02795.htmlMailing List · Patch · Vendor Advisory
Quick Facts
CVE IDCVE-2018-19364
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessCWE-416
CISA KEVNo
Affected5 vendor(s)
PublishedDec 13, 2018
Related CVEs (CWE-416)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-19364 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.