kernel: ACPI table override allowed when securelevel is enabled
Published Oct 7, 2016
7.4
HIGHCVSS 3.0
EPSS 0.50%
Description
The Linux kernel, as used in Red Hat Enterprise Linux 7.2 and Red Hat Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended Secure Boot restrictions and execute untrusted code by appending ACPI tables to the initrd.
Affected products
No data.
- n/a
- 2.0
- 7.2
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.el7
Fixed · RHSA-2016:2574
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-514.rt56.420.el7
Fixed · RHSA-2016:2584
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.el7 | Fixed | RHSA-2016:2574 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-514.rt56.420.el7 | Fixed | RHSA-2016:2584 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6 as the code with the flaw is not present in the products listed. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future Linux kernel updates for the respective releases might address this issue.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:M/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
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.50% (0.00498) | 40.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.50% (0.00502) | 38.73th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.04% (0.00038) | 8.39th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00082) | 36.76th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.08% (0.00082) | 35.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00082) | 33.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.11% (0.01108) | 54.62th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.54% (0.01537) | 73.85th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (9)
- http://rhn.redhat.com/errata/RHSA-2016-2574.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2016-2584.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2016/09/22/4 mailing-listx_refsource_MLISTThird Party Advisory
- http://www.securityfocus.com/bid/93114 vdb-entryx_refsource_BIDBroken Link
- https://access.redhat.com/security/cve/CVE-2016-3699 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1329653 x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry
- https://github.com/mjg59/linux/commit/a4a5ed2835e8ea042868b7401dced3f517cafa76 x_refsource_MISCExploit
- https://nvd.nist.gov/vuln/detail/CVE-2016-3699
- https://www.cve.org/CVERecord?id=CVE-2016-3699
| Link | Providers | Tags |
|---|---|---|
| http://rhn.redhat.com/errata/RHSA-2016-2574.html | vendor-advisoryx_refsource_REDHAT | |
| http://rhn.redhat.com/errata/RHSA-2016-2584.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.openwall.com/lists/oss-security/2016/09/22/4 | mailing-listx_refsource_MLISTThird Party Advisory | |
| http://www.securityfocus.com/bid/93114 | vdb-entryx_refsource_BIDBroken Link | |
| https://access.redhat.com/security/cve/CVE-2016-3699 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1329653 | x_refsource_CONFIRMIssue TrackingPatchThird Party AdvisoryVDB Entry | |
| https://github.com/mjg59/linux/commit/a4a5ed2835e8ea042868b7401dced3f517cafa76 | x_refsource_MISCExploit | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-3699 | ||
| https://www.cve.org/CVERecord?id=CVE-2016-3699 |
Change history (0)
No recorded changes yet.