CVE Database›Document archive›CVE-2026-98189

CVE-2026-98189

kernel: wifi: wilc1000: fix RX buffer OOB-write in wilc_wlan_handle_isr_ext()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 6, 2026

Updated · October 9, 2026

Description

A flaw was found in the Linux kernel's wilc1000 wireless driver. An attacker utilizing a malicious or compromised SDIO (Secure Digital Input Output) hardware device can cause a Denial of Service (DoS) or kernel memory corruption by triggering an out-of-bounds write. This issue occurs because the driver reads incoming data into a fixed-size receive buffer without validating that the device-reported transfer size does not exceed the buffer capacity.

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