Bug 2502301 (CVE-2026-63866)

Summary: CVE-2026-63866 kernel: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the Linux kernel's mt76 Wi-Fi driver for mt7996 devices. This vulnerability occurs when the `mt7996_mac_sta_deinit_link()` routine fails to properly clear a Wireless Client ID (WCID) pointer when removing a station link. This improper handling of the WCID pointer may lead to a resource management issue, potentially causing system instability or a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-07-19 15:02:45 UTC
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()

Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link
routine.