CVE-2021-3308 is a Denial of Service (DoS) vulnerability affecting Xen versions 4.12.3 through 4.12.4 and 4.13.1 through 4.14.x. An x86 HVM guest with PCI passthrough devices can exhaust system IDT vectors by repeatedly rebooting with MSI/MSI-X enabled, preventing other PCI passthrough devices or the host from functioning. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack with low complexity, requiring low privileges, and resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.13.1, <= 4.14.1CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | ||
4.12.3CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.12.3:*:*:*:*:*:*:* | ||
4.12.4CPE matchmatch criteria | cpe:2.3:o:xen:xen:4.12.4:*:*:*:*:*:*:* | ||
32CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
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
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.