Buffer overflow in QEMU
Priority LOW 34CWE-120Published · 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
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.
Why it matters now
EPSS 0.03012 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial QEMU (QEMU): 2.4.0Red Hat: 5 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| QEMU | QEMU | before 2.4.0 | 2.4.0 | Patch available | CNA |
- QEMU VendorQEMU Affected before 2.4.0 Fixed in 2.4.0 Patch available CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | before 2.4.0 | Vulnerable | QEMU |
| cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* | 21 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* | 22 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* | 23 | Vulnerable | Fedoraproject |
| cpe:2.3:o:arista:eos:4.12:*:*:*:*:*:*:* | 4.12 | Vulnerable | Arista |
| cpe:2.3:o:arista:eos:4.13:*:*:*:*:*:*:* | 4.13 | Vulnerable | Arista |
| cpe:2.3:o:arista:eos:4.14:*:*:*:*:*:*:* | 4.14 | Vulnerable | Arista |
| cpe:2.3:o:arista:eos:4.15:*:*:*:*:*:*:* | 4.15 | Vulnerable | Arista |
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions before 2.4.0 Vulnerable ·QEMU
- cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:* Versions 21 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* Versions 22 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* Versions 23 Vulnerable ·Fedoraproject
- cpe:2.3:o:arista:eos:4.12:*:*:*:*:*:*:* Versions 4.12 Vulnerable ·Arista
- cpe:2.3:o:arista:eos:4.13:*:*:*:*:*:*:* Versions 4.13 Vulnerable ·Arista
- cpe:2.3:o:arista:eos:4.14:*:*:*:*:*:*:* Versions 4.14 Vulnerable ·Arista
- cpe:2.3:o:arista:eos:4.15:*:*:*:*:*:*:* Versions 4.15 Vulnerable ·Arista
Remediation
- Fix · CNA QEMU (QEMU) Fixed in 2.4.0
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 4 | Affected | No fix planned: Will not fix |
Not affected: 1 product
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2015-5745
- 2026-10-03 Alias added: GHSA-w8v5-w883-3mh3
References
Patch 2
Advisory 5
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html
- http://www.openwall.com/lists/oss-security/2015/08/06/3
- https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13
More Qemu vulnerabilities
- TI-2024-16148 QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI… CVSS 3.1HIGH 8.8
- TI-2022-02736 Uncontrolled resource consumption in QEMU CVSS 3.1HIGH 7.8
- TI-2023-02681 Qemu: 9pfs: improper access control on special files CVSS 3.1HIGH 7.1
- TI-2019-09678 The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command… CVSS 3.0CRITICAL 9.8
- TI-2024-03326 Qemu-kvm: net: assertion failure in update_sctp_checksum() CVSS 3.1MEDIUM 5.5
- TI-2023-22631 QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2015-5745 · CVE Program
- CVE-2015-5745 · NVD
- FIRST EPSS
- GHSA-w8v5-w883-3mh3 · GitHub Advisory Database · CC BY 4.0
- CVE-2015-5745 · Red Hat security data · CC BY 4.0
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