CVE-2026-98703

kernel: wifi: mac80211: minstrel_ht: validate fixed rate index

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · October 18, 2026

Updated · October 22, 2026

Description

A flaw was found in the Linux kernel's mac80211 wireless subsystem. A local privileged user can cause a Denial of Service (DoS) by writing an invalid index value to the fixed-rate debugfs (debug filesystem) interface. Due to missing input validation, the kernel uses the value to access data outside array boundaries, corrupting adjacent kernel memory and causing a system crash.

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 3.1 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write