The Linux kernel, as used in Ubuntu 18.10 and when booted with UEFI Secure Boot enabled, allows privileged local users to bypass intended Secure Boot restrictions and execute untrusted code by loading arbitrary kernel modules
Published Oct 26, 2018
7.8
HIGHCVSS 3.0
EPSS 0.31%
Description
The Linux kernel, as used in Ubuntu 18.10 and when booted with UEFI Secure Boot enabled, allows privileged local users to bypass intended Secure Boot restrictions and execute untrusted code by loading arbitrary kernel modules. This occurs because a modified kernel/module.c, in conjunction with certain configuration options, leads to mishandling of the result of signature verification.
Affected products
No data.
- 18.10
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/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
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.31% (0.00311) | 21.67th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.31% (0.00311) | 24.18th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.04% (0.00042) | 5.06th | 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 4, 2022 | 0.89% (0.00890) | 12.04th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.44% (0.00444) | 10.84th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.44% (0.00444) | 0.00th | v1 |
References (3)
- https://launchpad.net/bugs/1798863 x_refsource_MISCExploitIssue TrackingVendor Advisory
- https://usn.ubuntu.com/3832-1/ vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory
- https://usn.ubuntu.com/3835-1/ vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://launchpad.net/bugs/1798863 | x_refsource_MISCExploitIssue TrackingVendor Advisory | |
| https://usn.ubuntu.com/3832-1/ | vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory | |
| https://usn.ubuntu.com/3835-1/ | vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory |
Change history (0)
No recorded changes yet.