Integer underflow in QEMU
Priority LOW 32CWE-191Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-191 and the CVSS impact.
Summary
An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01564 75th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | QEMU | Affected 6.1.0 and later. Will be fixed in 7.2.0-rc0. | — | No fix listed | CNA |
- QEMU Vendor— Affected Affected 6.1.0 and later. Will be fixed in 7.2.0-rc0. Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | 6.1.0 – 7.1.0 | Vulnerable | QEMU |
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 36 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | 37 | Vulnerable | Fedoraproject |
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions 6.1.0 – 7.1.0 Vulnerable ·QEMU
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
Remediation
Red Hat 2 advisories
- RHSA-2023:2757 Released 2023-05-16 · Red Hat rating Moderatevirt:rhel and virt-devel:rhel security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.noarch::virt:rhel, SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.src::virt:rhel, hivex-1.3.18-23.module+el8.8.0+16781+9f4724c2.aarch64::virt:rhel +47
- Red Hat Enterprise Linux CRB (v. 8) SLOF-20210217-1.module+el8.8.0+16781+9f4724c2.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.8.0+16781+9f4724c2.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.8.0+16781+9f4724c2.i686::virt-devel:rhel +47
- RHSA-2023:2162 Released 2023-05-09 · Red Hat rating Moderateqemu-kvm security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) qemu-guest-agent-17:7.2.0-14.el9_2, qemu-img-17:7.2.0-14.el9_2, qemu-kvm-17:7.2.0-14.el9_2 +16
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2023:2757 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:2162 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2023:2757 |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 Advanced Virtualization
- Red Hat OpenStack Platform 13 (Queens)
Timeline
- 2026-10-02 Threatist record created from CVE-2022-3165
- 2026-10-03 Alias added: GHSA-3wph-8799-87r7
References
Sources
- CVE-2022-3165 · CVE Program
- CVE-2022-3165 · NVD
- FIRST EPSS
- GHSA-3wph-8799-87r7 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-3165 · Red Hat security data · CC BY 4.0
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