kernel: xen: improper upper boundary check in get_free_port() function
Published Jan 7, 2014
7.7
HIGHCVSS 2.0
EPSS 0.56%
Description
The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.
Affected products
Remediation
Red Hat statement
This issue only affects Red Hat Enterprise Linux 5 as we did not backport upstream Xen unstable commit 2dcdd2fcb945. The versions of the Linux kernel as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected.
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:L/Au:S/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.56% (0.00555) | 44.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.56% (0.00560) | 41.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00081) | 21.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00890) | 30.33th | v2 (v2022.01.01) |
| Feb 13, 2023 | 0.89% (0.00890) | 29.93th | v2 (v2022.01.01) |
| Feb 3, 2023 | 0.95% (0.00950) | 31.66th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.89% (0.00890) | 28.64th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00890) | 26.62th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://downloads.avaya.com/css/P8/documents/100145416 x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2011-0833.html vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2011-1763 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=701240 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-1763
- https://www.cve.org/CVERecord?id=CVE-2011-1763
| Link | Providers | Tags |
|---|---|---|
| http://downloads.avaya.com/css/P8/documents/100145416 | x_refsource_CONFIRM | |
| http://rhn.redhat.com/errata/RHSA-2011-0833.html | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2011-1763 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=701240 | x_refsource_CONFIRMIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-1763 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-1763 |
Change history (0)
No recorded changes yet.