CVE-2015-2756
Medium
Description
QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.
SeverityMedium
CVSS4.9
Exploit probability—
Product
Debian Linux
PublishedApr 1, 2015
First seenApr 1, 2015
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian debian_linux | 7.0, 8.0 | — |
| xen xen | 4.3.0, 4.3.1, 4.3.2, 4.4.0, 4.4.1, 4.5.0 | — |
| fedoraproject fedora | 20, 21 | — |
| canonical ubuntu_linux | 12.04, 14.04, 14.10, 15.04 | — |
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