CVE-2018-9422

kernel: Elevation of Privilege in futex

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Severity

Unknown

Red Hat Product Security

2.5

CVSS 3.0

Review impact separately from score.

Published · February 9, 2016

Updated · June 28, 2026

Description

Non-optimized code for key handling of shared futexes was found in the Linux kernel in the form of unbounded contention time due to the page lock for real-time users. Before the fix, the page lock was an unnecessarily heavy lock for the futex path that protected too much. After the fix, the page lock is only required in a specific corner case.

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 · 2.5
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')