kernel: denial of service due to AMD Erratum #121
Published Dec 3, 2012
1.9
LOWCVSS 2.0
EPSS 0.44%
Description
Xen 4.0, and 4.1, when running a 64-bit PV guest on "older" AMD CPUs, does not properly protect against a certain AMD processor bug, which allows local guest OS users to cause a denial of service (host hang) via sequential execution of instructions across a non-canonical boundary, a different vulnerability than CVE-2012-0217.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-308.8.2.el5
Fixed · RHSA-2012:0721
Red Hat Enterprise Linux 5
kernel-xen
Affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-308.8.2.el5 | Fixed | RHSA-2012:0721 |
| Red Hat Enterprise Linux 5 | kernel-xen | Affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6, and Red Hat Enterprise MRG, as those versions have a guard page between the end of the user-mode accessible virtual address space and the beginning of the non-canonical area due to CVE-2005-1764 fix. This issue did affect the versions of Xen hypervisor as shipped with Red Hat Enterprise Linux 5. A kernel-xen update for Red Hat Enterprise Linux 5 is available to address this flaw.
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: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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.44% (0.00442) | 36.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.46% (0.00463) | 36.39th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.16% (0.00157) | 33.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00083) | 37.14th | v3 (v2023.03.01) |
| Jun 22, 2024 | 0.08% (0.00083) | 35.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00083) | 33.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.15th | v2 (v2022.01.01) |
No CWE recorded.
References (13)
- 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.xen.org/archives/html/xen-announce/2012-06/msg00002.html mailing-listx_refsource_MLISTPatchVendor Advisory
- http://secunia.com/advisories/51413 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://support.amd.com/us/Processor_TechDocs/25759.pdf x_refsource_MISC
- http://www.debian.org/security/2012/dsa-2501 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/53961 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2012-2934 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=824966 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-2934
- https://www.cve.org/CVERecord?id=CVE-2012-2934
Change history (0)
No recorded changes yet.