xen: libvchan failure handling malicious ring indexes (xsa-86)
Published Apr 1, 2014
4.9
MEDIUMCVSS 2.0
EPSS 0.54%
Description
The (1) do_send and (2) do_recv functions in io.c in libvchan in Xen 4.2.x, 4.3.x, and 4.4-RC series allows local guests to cause a denial of service or possibly gain privileges via crafted xenstore ring indexes, which triggers a "read or write past the end of the ring."
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
xen
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5 as it does not provide oxenstored. This issue does not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.
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:P/I:P/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.54% (0.00537) | 43.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.54% (0.00537) | 40.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00139) | 31.31th | 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/2014-03/msg00011.html vendor-advisoryx_refsource_SUSE
- http://seclists.org/oss-sec/2014/q1/264
- 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/2014/02/10/7 mailing-listx_refsource_MLIST
- http://xenbits.xen.org/xsa/advisory-86.html x_refsource_CONFIRMPatchVendor Advisory
- http://xenbits.xen.org/xsa/xsa86.patch x_refsource_CONFIRMPatch
- https://access.redhat.com/security/cve/CVE-2014-1896 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1062331 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-1896
- https://www.cve.org/CVERecord?id=CVE-2014-1896
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html | vendor-advisoryx_refsource_SUSE | |
| http://seclists.org/oss-sec/2014/q1/264 | ||
| 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/2014/02/10/7 | mailing-listx_refsource_MLIST | |
| http://xenbits.xen.org/xsa/advisory-86.html | x_refsource_CONFIRMPatchVendor Advisory | |
| http://xenbits.xen.org/xsa/xsa86.patch | x_refsource_CONFIRMPatch | |
| https://access.redhat.com/security/cve/CVE-2014-1896 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1062331 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-1896 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-1896 |
Change history (0)
No recorded changes yet.