CVE-2014-8594 Null dereference in n/a

What is CVE-2014-8594?

CVE-2014-8594 is a medium-severity vulnerability in Debian Debian Linux, published on 19 Nov 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP).

Weakness: CWE-20

Which versions are affected by CVE-2014-8594?

It affects 3 products.

Products include Debian Debian Linux, Opensuse Opensuse, Xen Xen.

How do I fix CVE-2014-8594?

Apply the vendor's patch.

Is CVE-2014-8594 being exploited?

There is no known exploitation of CVE-2014-8594 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2014-8594, GHSA-vq4v-m97r-fvvc, UBUNTU-CVE-2014-8594.