CVE-2012-3494
Low
Description
The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.
SeverityLow
CVSS2.1
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 | — |
| xen xen | 4.0.0, 4.1.0, 4.2.0 | — |
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