The PCI backend driver in Xen, when running on an x86 system and using Linux 3.1.x through 4.3.x as the driver domain, allows local guest administrators to generate a continuous stream of WARN messages and cause a denial of service (disk consumption) by leveraging a system with access to a passed-through MSI or MSI-X capable physical PCI device and XEN_PCI_OP_enable_msi operations, aka "Linux pciback missing sanity checks."
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-8552 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 5.2 |
---|---|
Base Metrics | AV:A/AC:M/Au:S/C:N/I:N/A:C |
Access Vector | Adjacent Network |
Access Complexity | Medium |
Authentication | Single |
Confidentiality Impact | None |
Integrity Impact | None |
Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Platform | Package | State |
---|---|---|
Red Hat Enterprise Linux 5 | kernel-xen | Will not fix |