CVE-2017-7889

High

The mm subsystem in the Linux kernel through 3.2 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.

Package Linux Kernel
Published 2017-04-17
Last modified 2026-05-13
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

7.8

out of 10
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-732

CVE-2017-7889 is classified as CWE-732

See CWE-732 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2017-7889 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

4 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2017-7889?

    CVE-2017-7889 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2017-7889 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2017-7889?

    CVE-2017-7889 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2017-7889?

    No patch is currently available for CVE-2017-7889. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2017-7889 actively exploited?

    No — CVE-2017-7889 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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