HIGH
CVE-2022-39189
NVD-CWE-noinfoPublished: September 2, 2022· Updated: Jun 17, 2026
7.8
CVSS v3.1
Official Description
An issue was discovered the x86 KVM subsystem in the Linux kernel before 5.18.17. Unprivileged guest users can compromise the guest kernel because TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED situations.
Technical Analysis
CVE-2022-39189 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
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
All References (14)
→
https://bugs.chromium.org/p/project-zero/issues/detail?id=2309Issue Tracking · Patch · Third Party Advisory
→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.17Patch · Release Notes · Vendor Advisory
→
→
https://github.com/torvalds/linux/commit/6cd88243c7e03845a450795e134b488fc2afb736Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230214-0007/Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5480Third Party Advisory · VDB Entry
→
https://bugs.chromium.org/p/project-zero/issues/detail?id=2309Issue Tracking · Patch · Third Party Advisory
→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.17Patch · Release Notes · Vendor Advisory
→
→
https://github.com/torvalds/linux/commit/6cd88243c7e03845a450795e134b488fc2afb736Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20230214-0007/Third Party Advisory
→
https://www.debian.org/security/2023/dsa-5480Third Party Advisory · VDB Entry
Quick Facts
CVE IDCVE-2022-39189
CVSS Score7.8 / 10
SeverityHIGH
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected2 vendor(s)
PublishedSep 2, 2022
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-39189 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.