CVE-2015-7837: redhat enterprise_linux 7PK - Security Features
CVSS: 5.5v3.0MediumModified
AliasesUBUNTU-CVE-2015-7837DEBIAN-CVE-2015-7837
Published 19-09-2017Last modified 06-08-2024
Vulnerability summary
CVE-2015-7837 is a medium (CVSS 5.5) 7PK - Security Features vulnerability in redhat enterprise_linux. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33.3% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.0 (NVD)EPSS score
0.40%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 2Timeline
- 19-09-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Low 2.1Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
0.00 pp
From 0.40% on 20-09-2026
20-09-202620-10-2026
EPSS score0.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu105 products
- linux< 4.4.0-93.116 | All versions (No fix recorded)
- linux-aws< 4.4.0-1032.41 | All versions (No fix recorded)
- linux-aws-5.15All versions (No fix recorded)
- linux-aws-5.4All versions (No fix recorded)
- linux-aws-6.14All versions (No fix recorded)
Redhat6 products
- enterprise_linuxEOL7.0 | 7.2 | 7.3
- enterprise_linux_desktop7.0
- enterprise_linux_server_aus7.3 | 7.4
- enterprise_linux_workstation7.0
- enterprise_mrg2.0
Debian1 product
- linux< 4.5.1-1
3 vendors · 112 products
References
13 links- github.com/mjg59/linux/commit/4b2b64d5a6ebc84214755ebccd599baef7c1b798X Refsource CONFIRMIssue TrackingThird Party Advisory
