Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
- Published
- Apr 14, 2016
- Updated
- Jun 16, 2026
- EPSS
- 1.1% · 64th percentile
- CWE
- CWE-284
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 32 / 40 · 8.2 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.1%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| xen | xen | cpe:2.3:o:xen:xen |
| novell | suse linux enterprise real time extension | cpe:2.3:o:novell:suse_linux_enterprise_real_time_extension |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- novell suse linux enterprise real time extension12
- xen xenall versions
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 4.3.3-3 | 4.3.3-3 |
| Debian:12 | qemu | before 1:2.5+dfsg-2 | 1:2.5+dfsg-2 |
| Debian:12 | xen | before 4.8.0~rc3-1 | 4.8.0~rc3-1 |
| Debian:7 | linux | before 3.2.73-2+deb7u2 | 3.2.73-2+deb7u2 |
| Debian:7 | xen | before 4.1.6.1-1+deb7u1 | 4.1.6.1-1+deb7u1 |
| Debian:8 | linux | before 3.16.7-ckt20-1+deb8u2 | 3.16.7-ckt20-1+deb8u2 |
| Debian:8 | qemu | before 1:2.1+dfsg-12+deb8u5a | 1:2.1+dfsg-12+deb8u5a |
| Debian:8 | xen | before 4.4.1-9+deb8u4 | 4.4.1-9+deb8u4 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-default | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-pae | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-source | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-syms | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-trace | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | kernel-xen | before 3.0.101-71.1 | 3.0.101-71.1 |
| SUSE:Linux Enterprise Desktop 12 | kernel-default | before 3.12.51-52.34.1 | 3.12.51-52.34.1 |
| SUSE:Linux Enterprise Desktop 12 | kernel-source | before 3.12.51-52.34.1 | 3.12.51-52.34.1 |
| SUSE:Linux Enterprise Desktop 12 | kernel-syms | before 3.12.51-52.34.1 | 3.12.51-52.34.1 |
| SUSE:Linux Enterprise Desktop 12 | kernel-xen | before 3.12.51-52.34.1 | 3.12.51-52.34.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | kernel-default | before 3.12.53-60.30.1 | 3.12.53-60.30.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | kernel-source | before 3.12.53-60.30.1 | 3.12.53-60.30.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | kernel-syms | before 3.12.53-60.30.1 | 3.12.53-60.30.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | kernel-xen | before 3.12.53-60.30.1 | 3.12.53-60.30.1 |
| SUSE:Linux Enterprise Desktop 12 SP1 | xen | before 4.5.2_06-7.1 | 4.5.2_06-7.1 |
| SUSE:Linux Enterprise Live Patching 12 | kgraft-patch-SLE12_Update_10 | before 1-2.1 | 1-2.1 |
+31
Same product
xen: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-10921The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, whi41Plan
- CVE-2017-10920The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host41Plan
- CVE-2017-10918Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host 41Plan
- CVE-2017-10912Xen through 4.8.x mishandles page transfer, which allows guest OS users to obtain privileged host OS access, aka XSA-217.41Plan
- CVE-2015-8104The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host O41Plan
- CVE-2015-5165The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 4.3.3-3 · Debian:12 | Package registry (OSV) |
| debian:qemu | 1:2.5+dfsg-2 · Debian:12 | Package registry (OSV) |
| debian:xen | 4.8.0~rc3-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-default | 3.12.51-52.34.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-docs | 3.12.51-52.34.3 · SUSE:Linux Enterprise Software Development Kit 12 | Package registry (OSV) |
| suse:kernel-ec2 | 3.12.51-52.34.1 · SUSE:Linux Enterprise Module for Public Cloud 12 | Package registry (OSV) |
| suse:kernel-obs-build | 3.12.51-52.34.1 · SUSE:Linux Enterprise Software Development Kit 12 | Package registry (OSV) |
| suse:kernel-pae | 3.0.101-71.1 · SUSE:Linux Enterprise Desktop 11 SP4 | Package registry (OSV) |
| suse:kernel-source | 3.12.51-52.34.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-syms | 3.12.51-52.34.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kernel-xen | 3.12.51-52.34.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| suse:kgraft-patch-SLE12_Update_10 | 1-2.1 · SUSE:Linux Enterprise Live Patching 12 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP1_Update_3 | 1-2.1 · SUSE:Linux Enterprise Live Patching 12 | Package registry (OSV) |
| suse:lttng-modules | 2.7.0-3.1 · SUSE:Linux Enterprise Server 12 SP1 | Package registry (OSV) |
| suse:xen | 4.5.2_06-7.1 · SUSE:Linux Enterprise Desktop 12 SP1 | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2026-07-15 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+3744 d
- TodaySep 30, 2026+3821 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
- www.debian.org/security/2016/dsa-3434
- www.debian.org/security/2016/dsa-3471
- www.debian.org/security/2016/dsa-3519
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- www.securityfocus.com/bid/79592
- www.securitytracker.com/id/1034479
- xenbits.xen.org/xsa/advisory-155.html
- security.gentoo.org/glsa/201604-03
Vendor advisories and official records. Exploit/PoC links are deliberately left out.