kernel: xen: Several memory hypercall operations allow invalid extent order values
Published Dec 13, 2012
4.7
MEDIUMCVSS 2.0
EPSS 0.41%
Description
The (1) XENMEM_decrease_reservation, (2) XENMEM_populate_physmap, and (3) XENMEM_exchange hypercalls in Xen 4.2 and earlier allow local guest administrators to cause a denial of service (long loop and hang) via a crafted extent_order value.
Affected products
No data.
- ≤ 4.2.0
- 3.0.2
- 3.0.3
- 3.0.4
- 3.1.3
- 3.1.4
- 3.2.0
- 3.2.1
- 3.2.2
- 3.2.3
- 3.3.0
- 3.3.1
- 3.3.2
- 3.4.0
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 4.0.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-348.1.1.el5
Fixed · RHSA-2013:0168
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-348.1.1.el5 | Fixed | RHSA-2013:0168 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5. This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
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 | 0.41% (0.00411) | 32.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00411) | 32.54th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00140) | 31.40th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00064) | 30.08th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.06% (0.00064) | 28.17th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00064) | 26.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
No CWE recorded.
References (27)
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-04/msg00051.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2013-04/msg00052.html vendor-advisoryx_refsource_SUSE
- http://lists.xen.org/archives/html/xen-announce/2012-12/msg00001.html mailing-listx_refsource_MLISTVendor Advisory
- http://secunia.com/advisories/51397 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/51468 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/51486 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/51487 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/51495 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/55082 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-201309-24.xml vendor-advisoryx_refsource_GENTOO
- http://support.citrix.com/article/CTX135777 x_refsource_CONFIRM
- http://www.debian.org/security/2012/dsa-2582 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2012/12/03/9 mailing-listx_refsource_MLIST
- http://www.osvdb.org/88127 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/56798 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-5515 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=877397 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80479 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-5515
- https://www.cve.org/CVERecord?id=CVE-2012-5515
Change history (0)
No recorded changes yet.