CVE-2015-8539

High

The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.

Package Linux Kernel
Published 2016-02-08
Last modified 2026-05-06
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-269

CVE-2015-8539 is classified as CWE-269

See CWE-269 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2015-8539 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2015-8539?

    CVE-2015-8539 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2015-8539 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2015-8539?

    CVE-2015-8539 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-2015-8539?

    No patch is currently available for CVE-2015-8539. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2015-8539 actively exploited?

    No — CVE-2015-8539 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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