The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2…
Priority LOW 25CWE-254Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 9 fixed, 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot.
Why it matters now
EPSS 0.00405 34th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 9 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:* | 7.3 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* | 7.3 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* | 7.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:kernel-rt:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* Versions 7.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:kernel-rt:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
Remediation
Red Hat 2 advisories
- RHSA-2015:2152 Released 2015-11-19 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
- Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
- Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
- Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-bootwrapper-3.10.0-327.el7 +11
- Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-327.el7, kernel-tools-libs-devel-3.10.0-327.el7
- Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-327.el7, kernel-abi-whitelists-3.10.0-327.el7, kernel-debug-3.10.0-327.el7 +8
- Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-327.el7
- RHSA-2015:2411 Released 2015-11-19 · Red Hat rating Importantkernel-rt security, bug fix, and enhancement update
- Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-327.rt56.204.el7, kernel-rt-debug-3.10.0-327.rt56.204.el7, kernel-rt-debug-devel-3.10.0-327.rt56.204.el7 +4
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise MRG 2 | Affected | No fix yet |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2015:2152 |
| Red Hat Enterprise Linux for Real Time (v. 7) | Fixed | RHSA-2015:2411 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2015-7837
- 2026-10-03 Alias added: GHSA-3cqh-r98g-rhgh
References
More Red Hat Enterprise Linux vulnerabilities
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2018-10530 Code injection in [UNKNOWN] RichFaces KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
Sources
- CVE-2015-7837 · CVE Program
- CVE-2015-7837 · NVD
- FIRST EPSS
- GHSA-3cqh-r98g-rhgh · GitHub Advisory Database · CC BY 4.0
- CVE-2015-7837 · Red Hat security data · CC BY 4.0
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