Home/CVE/The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secur
CVE

CVE-2015-7837

The Linux kernel, as used in Red Hat Enterprise Linux 7, kernel-rt, and Enterprise MRG 2 and when booted with UEFI Secur

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.

MEDIUM · CVSS 5.5 EPSS 0.00073
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
▤

Affected Products & Versions

6
redhat enterprise linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux server ausall versions
redhat enterprise linux workstationall versions
redhat enterprise mrgall versions
redhat kernel-rtall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Sep 2017 · 04:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

4
usnUSN-3405-2
usnUSN-3405-1
rhsaRHSA-2015:2152Moderate
rhsaRHSA-2015:2411Low
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://rhn.redhat.com/errata/RHSA-2015-2152.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2015-2411.htmlVendor Advisory
http://www.openwall.com/lists/oss-security/2015/10/15/6Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/77097Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1272472Issue TrackingVendor Advisory
https://github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798Issue TrackingThird Party Advisory
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