CVE-2012-3494
EPSS 0.11%xen - denial of service
Published: 11/23/2012Modified: 4/28/2026
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.
Affected packages (2)
- Debian/xenfrom 0, < 4.1.3-2
- Debian/xenfrom 0, < 4.0.1-5.4