CVE-2016-6786

kernel: Possible privilege escalation due to lack of locking around changing event->ctx

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Severity

Moderate

Red Hat Product Security

CVSS 3.0

Review impact separately from score.

Published · February 4, 2015

Updated · November 21, 2025

Description

kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 30955111.

Statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG-2 as the flaw was already fixed in the products listed.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 7
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 · 6.2
AV:L/AC:H/Au:N/C:C/I:C/A:C

CWE-667 · Improper Locking