CVE-2011-1780
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service ...
6.1 MediumFix available
CVE-2011-1780 is a medium vulnerability (CVSS 6.1) in Xen, published January 7, 2014. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in kernel 0:2.6.18-274.el5.
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
Exploit likelihood
0.70%Down 0.3 points since Feb 4, 2022
What each source reports
NVD Score used
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
- Record
CVE-2011-1780- CVSS 2.0
- 6.1 Medium
AV:A/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
- Record
CVE-2011-1780- Updated
- 2026-11-02
EUVDEUVD-2011-1778 No score
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
- Record
EUVD-2011-1778- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8pmg-vx2g-j2cx No score
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service ...
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.
- Record
GHSA-8pmg-vx2g-j2cx- Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
kernelRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAERed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debugRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
Show 41 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-docRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-headersRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xenRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::client |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernelRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAERed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debugRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-docRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-headersRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-kdumpRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-kdump-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xenRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-274.el5 | 0:2.6.18-274.el5 |
kernelRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-PAERed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-debugRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-docRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-headersRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-kdumpRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-kdump-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-xenRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::server |
before 0:2.6.18-238.21.1.el5 | 0:2.6.18-238.21.1.el5 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
rhn.redhat.com/errata/RHSA-2011-1065.html
bugzilla.redhat.com/show_bug.cgi?id=702657
openwall.com/lists/oss-security/2011/07/07/3
nvd.nist.gov/vuln/detail/CVE-2011-1780
github.com/advisories/GHSA-8pmg-vx2g-j2cx
Show 163 moreShow less
access.redhat.com/errata/RHSA-2011:1065
docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.7_Technical_Notes/kernel.html
security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_1065.json
cve.org/CVERecord?id=CVE-2011-1780