CVE-2022-42332 is a use-after-free vulnerability in Xen's shadow mode, affecting Debian, Fedora, and Xen hypervisors when Hardware Assisted Paging (HAP) is unavailable. This flaw occurs because memory allocated for log-dirty tracking is not properly accounted for, leading to shadow page tables being prematurely freed while still in use. With a CVSS score of 7.8 (High), an attacker with local privileges can achieve high impact on confidentiality, integrity, and availability. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and the vulnerability has received minimal community discussion or media coverage, indicating a low current exploitation risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 3.2.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* | ||
11.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | ||
37CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | ||
38CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.