CVE-2022-23034 is a medium-severity denial-of-service (DoS) vulnerability affecting Xen hypervisors, specifically impacting Debian and Fedora distributions. A malicious or compromised PV guest can trigger a hypervisor bug check by exploiting a double decrement in grant mapping reference counts, leading to an underflow. This vulnerability has a CVSS score of 5.5, indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.2.0, < 4.13.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.