Vulnerability in Red Hat Enterprise Linux
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 Secure Boot enabled, allows local users to bypass intended securelevel/secureboot restrictions by leveraging improper handling of secure_boot flag across kexec reboot.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (32.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 32.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Red Hat Enterprise Linux — versions 7.0, 7.2, 7.3
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.3, 7.4
- Red Hat Enterprise Linux Workstation — versions 7.0
- Red Hat Enterprise Mrg — versions 2.0
- Red Hat Kernel-Rt — versions 7.0
Weakness classification (CWE)
References
- github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798 (Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- rhn.redhat.com/errata/RHSA-2015-2152.html (vendor-advisory, Vendor Advisory)
- www.securityfocus.com/bid/77097 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2015/10/15/6 (mailing-list, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2015-2411.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2015-7837?
- CVE-2015-7837 is a medium-severity vulnerability in Red Hat Enterprise Linux, classified under CWE-254. CVSS score: 5.5/10. Published 2017-09-19.
- How severe is CVE-2015-7837?
- Medium severity. CVSS v3 base score is 5.5 out of 10.