CVE-2015-7837
Summary
| CVE | CVE-2015-7837 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-09-19 16:29:00 UTC |
| Updated | 2021-07-15 19:16:00 UTC |
| Description | 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. |
Risk And Classification
Problem Types: CWE-254
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Redhat | Enterprise Linux | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.2 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.3 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.2 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.3 | All | All | All |
| Operating System | Redhat | Enterprise Linux Desktop | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux Desktop | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 7.3 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 7.4 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 7.3 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 7.4 | All | All | All |
| Operating System | Redhat | Enterprise Linux Workstation | 7.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux Workstation | 7.0 | All | All | All |
| Application | Redhat | Enterprise Mrg | 2.0 | All | All | All |
| Operating System | Redhat | Enterprise Mrg | 2.0 | All | All | All |
| Application | Redhat | Enterprise Mrg | 2.0 | All | All | All |
| Operating System | Redhat | Kernel-rt | 7.0 | All | All | All |
| Operating System | Redhat | Kernel-rt | 7.0 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| 1272472 – (CVE-2015-7837) CVE-2015-7837 kernel: securelevel disabled after kexec | CONFIRM | bugzilla.redhat.com | Issue Tracking, Vendor Advisory |
| Red Hat Customer Portal | REDHAT | rhn.redhat.com | Vendor Advisory |
| oss-security - Re: CVE Request - Linux kernel - securelevel/secureboot bypass. | MLIST | www.openwall.com | Mailing List, Third Party Advisory |
| kexec/uefi: copy secure_boot flag in boot params across kexec reboot · mjg59/linux@4b2b64d · GitHub | CONFIRM | github.com | Issue Tracking, Third Party Advisory |
| Red Hat Customer Portal | REDHAT | rhn.redhat.com | Vendor Advisory |
| Linux Kernel 'securelevel/secureboot' Local Security Bypass Vulnerability | BID | www.securityfocus.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.