CVE-2026-98889
kernel: wifi: iwlwifi: mvm: fix sched scan IE sizing
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 23, 2026
Updated · October 26, 2026
Description
A flaw was found in the Linux kernel's Intel Wi-Fi driver (iwlwifi). During scheduled network scans, the driver copies Information Elements (IEs)—data fields used in wireless communications—into a fixed-size buffer before validating their length. A local user with network administration privileges can exploit this flaw by submitting oversized scan parameters, causing a buffer overflow. This flaw can lead to a Denial of Service (DoS) by crashing the system or potentially allow arbitrary code execution.
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 · 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')