kernel: xen: Memory mapping failure can crash Xen
Published Nov 21, 2012
2.1
LOWCVSS 2.0
EPSS 0.44%
Description
Xen 3.4 through 4.2, and possibly earlier versions, does not properly synchronize the p2m and m2p tables when the set_p2m_entry function fails, which allows local HVM guest OS administrators to cause a denial of service (memory consumption and assertion failure), aka "Memory mapping failure DoS vulnerability."
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-308.24.1.el5
Fixed · RHSA-2012:1540
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-308.24.1.el5 | Fixed | RHSA-2012:1540 |
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:L/Au:N/C:N/I:N/A:P
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 | 0.44% (0.00437) | 35.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00433) | 34.33th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00105) | 26.13th | 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) |
References (27)
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00008.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00009.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.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/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.xen.org/archives/html/xen-announce/2012-11/msg00005.html mailing-listx_refsource_MLISTVendor Advisory
- http://osvdb.org/87307 vdb-entryx_refsource_OSVDB
- http://rhn.redhat.com/errata/RHSA-2012-1540.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/51200 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/51324 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/51352 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/51413 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/51468 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/55082 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-201309-24.xml vendor-advisoryx_refsource_GENTOO
- http://www.debian.org/security/2012/dsa-2582 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2012/11/13/6 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/56498 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1027761 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2012-4537 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=870101 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80024 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-4537
- https://security.gentoo.org/glsa/201604-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2012-4537
Change history (0)
No recorded changes yet.