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CVE-2026-80943

kernel: wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 11, 2026

Updated · September 29, 2026

Description

A flaw was found in the Linux kernel's rtlwifi driver. This vulnerability occurs when the rtl92du_tx_fill_desc() function uses a Quality of Service (QoS) Traffic Identifier (TID) value greater than 8 as an index into an array that only has 9 allocated entries. A remote attacker could potentially exploit this out-of-bounds array access, leading to memory corruption and potentially a denial of service.

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write