CVE-2026-74409

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74409

Key Details

CVE	CVE-2026-74409
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is adjacent; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: add bounds check on firmware mac_id in link lookup

The mac_id field in RX descriptors is 8 bits wide (0-255), but

assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries.

While the driver currently assigns mac_id values below 128, the

descriptor value comes from firmware and is not validated before use

as an array index. Add a defensive bounds check in

rtw89_assoc_link_rcu_dereference() to guard against out-of-range

firmware values. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74409
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74409

Source

Reference

NVD

CVE