kernel: xen: grant table entry swaps have inadequate bounds checking
Published Nov 23, 2012
6.9
MEDIUMCVSS 2.0
EPSS 0.36%
Description
The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.
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:C/I:C/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 | 0.36% (0.00356) | 26.97th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00356) | 27.26th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00081) | 21.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00062) | 28.60th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00062) | 26.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/50472 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/50530 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://support.citrix.com/article/CTX134708 x_refsource_CONFIRMPatchVendor Advisory
- http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/09/05/11 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/55411 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-3516 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=851202 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-3516
- https://www.cve.org/CVERecord?id=CVE-2012-3516
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/50472 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/50530 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://support.citrix.com/article/CTX134708 | x_refsource_CONFIRMPatchVendor Advisory | |
| http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2012/09/05/11 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/55411 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2012-3516 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=851202 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-3516 | ||
| https://www.cve.org/CVERecord?id=CVE-2012-3516 |
Change history (0)
No recorded changes yet.