CVE-2017-7889

Impact:
Moderate
Public Date:
2017-04-05
CWE:
CWE-391
Bugzilla:
1444493: CVE-2017-7889 kernel: mm subsystem does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism
The mm subsystem in the Linux kernel through 4.10.10 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.

Find out more about CVE-2017-7889 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. This is not currently planned to be addressed in future updates of the product due to its life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

This issue affects the versions of the Linux kernel as shipped with
Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2. Future kernel
updates for Red Hat Enterprise Linux 6, 7 and Red Hat Enterprise MRG 2 may
address this issue.

CVSS v3 metrics

CVSS3 Base Score 7.8
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity Impact High
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 7 (kernel) RHSA-2017:1842 2017-08-01
Red Hat MRG Grid for RHEL 6 Server v.2 (kernel-rt) RHSA-2017:2669 2017-09-06
Red Hat Enterprise Linux 6 (kernel) RHSA-2018:1854 2018-06-19
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2017:2077 2017-08-01

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.
Last Modified