CVE-2012-4536 Denial of service in n/a

What is CVE-2012-4536?

CVE-2012-4536 is a low-severity denial of service vulnerability in Xen Xen, published on 21 Nov 2012. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The (1) domain_pirq_to_emuirq and (2) physdev_unmap_pirq functions in Xen 2.2 allows local guest OS administrators to cause a denial of service (Xen crash) via a crafted pirq value that triggers an out-of-bounds read.

Which versions are affected by CVE-2012-4536?

It affects 1 product.

Products include Xen Xen.

How do I fix CVE-2012-4536?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2012-4536 being exploited?

There is no known exploitation of CVE-2012-4536 in the wild and no public exploit code.

Other vulnerabilities in Xen Xen

• CVE-2017-10912 Privilege escalation in n/a Critical 10.0
• CVE-2017-10918 Memory corruption in n/a Critical 10.0
• CVE-2017-10920 Memory corruption in n/a Critical 10.0
• CVE-2017-10921 Memory corruption in n/a Critical 10.0
• CVE-2025-27466 Mutiple vulnerabilities in the Viridian interface Critical 9.8

All Xen Xen vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2012-4536, GHSA-75wr-64hp-88pq.