CVE-2011-2519 describes a denial-of-service vulnerability in Xen within the Linux kernel, specifically impacting guests running on hosts without hardware-assisted paging. An authenticated guest user can trigger an invalid pointer dereference and hypervisor crash by using the SAHF instruction, affecting Red Hat Enterprise Linux and Xen products. This vulnerability has a CVSS score of 5.5, indicating a medium severity with an adjacent network attack vector and high impact on availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.3.0CPE matchmatch criteria | cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:A/AC:L/Au:S/C:N/I:N/A:C
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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.
CVE-2011-2519
Sep 8, 2020Xen in the Linux kernel when running a guest on a host without hardware assisted paging (HAP) allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.
Dec 2, 2013kernel: xen: x86_emulate: fix SAHF emulation
Aug 30, 2011