CVE-2012-3495
Medium
Description
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Citrix Xenserver
PublishedNov 23, 2012
First seenNov 23, 2012
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| citrix xenserver | v ≤ 6.0.2, 5.0, 5.5, 5.6, 6.0 | — |
| xen xen | 4.1.0, 4.1.1, 4.1.2, 4.1.3 | — |
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