kernel: xen: several hypercalls do not validate input GFNs
Published Dec 13, 2012
4.7
MEDIUMCVSS 2.0
EPSS 1.60%
Description
The get_page_from_gfn hypercall function in Xen 4.2 allows local PV guest OS administrators to cause a denial of service (crash) via a crafted GFN that triggers a buffer over-read.
Affected products
Remediation
Red Hat statement
Not vulnerable. This issue did not 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.60% (0.01600) | 74.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.60% (0.01600) | 72.55th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.89% (0.06889) | 90.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.60% (0.04597) | 81.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.89% (0.06889) | 90.71th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00178) | 56.29th | v3 (v2023.03.01) |
| Jan 24, 2024 | 0.18% (0.00178) | 55.13th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00178) | 53.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.94% (0.05938) | 90.54th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.94% (0.05938) | 89.63th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.94% (0.05938) | 77.48th | v2 (v2022.01.01) |
No CWE recorded.
References (11)
- http://secunia.com/advisories/51397 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://www.openwall.com/lists/oss-security/2012/12/03/6 mailing-listx_refsource_MLIST
- http://www.osvdb.org/88133 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/56805 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-5525 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=877404 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80480 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-5525
- https://www.cve.org/CVERecord?id=CVE-2012-5525
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/51397 | 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://www.openwall.com/lists/oss-security/2012/12/03/6 | mailing-listx_refsource_MLIST | |
| http://www.osvdb.org/88133 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/56805 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2012-5525 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=877404 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/80480 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-5525 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-5525 |
Change history (0)
No recorded changes yet.