xen: arm: Host crash caused by VMID exhaustion (XSA-181)
Published Jun 7, 2016
5.6
MEDIUMCVSS 3.0
EPSS 0.34%
Description
The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
AV:L/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.34% (0.00342) | 25.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.34% (0.00342) | 25.77th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00136) | 30.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00059) | 26.93th | v3 (v2023.03.01) |
| May 25, 2024 | 0.06% (0.00059) | 24.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00059) | 22.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- http://www.debian.org/security/2016/dsa-3633 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/91015 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036035 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-181.html x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2016-5242 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1342529 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-5242
- https://www.cve.org/CVERecord?id=CVE-2016-5242
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2016/dsa-3633 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/91015 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1036035 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-181.html | x_refsource_CONFIRMVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2016-5242 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1342529 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-5242 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-5242 |
Change history (0)
No recorded changes yet.