CVE-2026-90356
kernel: wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's mt76 wifi driver, specifically in the mt7996 component. This vulnerability arises from an incorrect order of operations during a full reset, where Virtual Interface (VIF) links are freed before their corresponding Wireless Client ID (WCID) entries are cleared. This can lead to a use-after-free condition, allowing a local attacker to potentially cause system instability or 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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference