Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2018-18438 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 6.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity Impact | Low |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 9.0 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 8.0 (Liberty) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 14 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 13.0 (Queens) | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 12.0 | qemu-kvm-rhev | Affected |
| Red Hat OpenStack Platform 10 | qemu-kvm-rhev | Affected |
| Red Hat Enterprise Linux 7 | qemu-kvm | Affected |
| Red Hat Enterprise Linux 7 | qemu-kvm-rhev | Affected |
| Red Hat Enterprise Linux 7 | qemu-kvm-ma | Not affected |
| Red Hat Enterprise Linux 6 | qemu-kvm | Affected |
Vulmon