xen: integer overflow in several XSM/Flask hypercalls (xsa-84)
Published Apr 1, 2014
5.2
MEDIUMCVSS 2.0
EPSS 0.55%
Description
Multiple integer overflows in the (1) FLASK_GETBOOL, (2) FLASK_SETBOOL, (3) FLASK_USER, and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1892, CVE-2014-1893, and CVE-2014-1894.
Affected products
No data.
- ≤ 4.3.0
- 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
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6.1
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.3.1
No data.
Red Hat Enterprise Linux 5
kernel-xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-xen | Not affected | n/a |
No package ranges for this CVE.
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 2 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:A/AC:M/Au:S/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 | 0.55% (0.00547) | 43.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.55% (0.00547) | 41.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.46% (0.00455) | 61.76th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.09th | v3 (v2023.03.01) |
| Dec 26, 2023 | 0.04% (0.00042) | 5.79th | v3 (v2023.03.01) |
| Sep 25, 2023 | 0.06% (0.00060) | 23.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.10% (0.01104) | 52.45th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.10% (0.01104) | 50.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html vendor-advisoryx_refsource_SUSE
- http://seclists.org/oss-sec/2014/q1/266
- http://security.gentoo.org/glsa/glsa-201407-03.xml vendor-advisoryx_refsource_GENTOO
- http://www.openwall.com/lists/oss-security/2014/02/07/12 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2014/02/07/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2014/02/10/8 mailing-listx_refsource_MLIST
- http://xenbits.xen.org/xsa/advisory-84.html x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2014-1891 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1062326 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-1891
- https://www.cve.org/CVERecord?id=CVE-2014-1891
Change history (0)
No recorded changes yet.