Xen in the Linux kernel, when running a guest on a host without hardware assisted paging…
Priority LOW 26CWE-476Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
Xen 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.
Why it matters now
EPSS 0.00671 52nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* | before 3.3.0 | Vulnerable | Xen |
| cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* | 5.0 | Vulnerable | Red Hat |
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* Versions before 3.3.0 Vulnerable ·Xen
- cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2011:1813 Released 2011-12-13 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux EUS (v. 5.6 server) kernel-2.6.18-238.31.1.el5, kernel-2.6.18-238.31.1.el5.ia64, kernel-PAE-2.6.18-238.31.1.el5 +14
- RHSA-2011:1212 Released 2011-09-06 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux (v. 5 server) kernel-2.6.18-274.3.1.el5, kernel-2.6.18-274.3.1.el5.ia64, kernel-PAE-2.6.18-274.3.1.el5 +14
- Red Hat Enterprise Linux Desktop (v. 5 client) kernel-2.6.18-274.3.1.el5, kernel-PAE-2.6.18-274.3.1.el5, kernel-PAE-devel-2.6.18-274.3.1.el5 +6
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix yet |
| Red Hat Enterprise Linux (v. 5 server) | Fixed | RHSA-2011:1212 |
| Red Hat Enterprise Linux Desktop (v. 5 client) | Fixed | RHSA-2011:1212 |
| Red Hat Enterprise Linux EUS (v. 5.6 server) | Fixed | RHSA-2011:1813 |
Not affected: 3 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 6
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2011-2519
- 2026-10-03 Alias added: GHSA-7vg8-g6px-4578
References
Sources
- CVE-2011-2519 · CVE Program
- CVE-2011-2519 · NVD
- FIRST EPSS
- GHSA-7vg8-g6px-4578 · GitHub Advisory Database · CC BY 4.0
- CVE-2011-2519 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences