CVE-2015-8539

HIGH
7.8
CVSS Score
Published: February 8, 2016 at 02:00 AM UTC
Updated: June 17, 2026 at 12:34 AM UTC
3 products affected across 3 vendorsLinux KernelUbuntu LinuxLinux Enterprise Real Time Extension

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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 4.4, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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