xen: arm: vgic: Out-of-bound access when sending SGIs (XSA-225)
Published Jul 5, 2017
7.7
HIGHCVSS 3.0
EPSS 1.80%
Description
Xen through 4.8.x does not validate a vCPU array index upon the sending of an SGI, which allows guest OS users to cause a denial of service (hypervisor crash), aka XSA-225.
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 mitigation
On systems where the guest kernel is controlled by the host rather than guest administrator, running only kernels which only send sane IPIs (i.e. targeting valid CPUs) will prevent untrusted guest users from exploiting this issue. However untrusted guest administrators can still trigger it unless further steps are taken to prevent them from loading code into the kernel (e.g by disabling loadable modules etc) or from using other mechanisms which allow them to run code at kernel privilege.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
AV:N/AC:L/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.80% (0.01804) | 77.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.80% (0.01804) | 75.63th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.78% (0.00779) | 71.41th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.46% (0.02463) | 75.38th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.78% (0.00779) | 71.98th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.25% (0.00251) | 65.58th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.25% (0.00251) | 64.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.25% (0.00251) | 61.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.29% (0.01294) | 30.79th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.29% (0.01294) | 0.00th | v1 |
References (9)
- http://www.securityfocus.com/bid/99160 vdb-entryx_refsource_BIDTool SignatureVDB Entry
- http://www.securitytracker.com/id/1038735 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-225.html
- https://access.redhat.com/security/cve/CVE-2017-10923 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1459515 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-10923
- https://security.gentoo.org/glsa/201708-03 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-10923
- https://xenbits.xen.org/xsa/advisory-225.html x_refsource_CONFIRMMailing ListMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/99160 | vdb-entryx_refsource_BIDTool SignatureVDB Entry | |
| http://www.securitytracker.com/id/1038735 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://xenbits.xen.org/xsa/advisory-225.html | ||
| https://access.redhat.com/security/cve/CVE-2017-10923 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1459515 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-10923 | ||
| https://security.gentoo.org/glsa/201708-03 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-10923 | ||
| https://xenbits.xen.org/xsa/advisory-225.html | x_refsource_CONFIRMMailing ListMitigationVendor Advisory |
Change history (0)
No recorded changes yet.