Is there a public exploit for CVE-2026-99134?

No public exploit for CVE-2026-99134 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

— Unscored

In the Linux kernel, the following vulnerability has been resolved: mac802154: fix data race and NULL deref on local->assocdev…

CVE-2026-99134

In the Linux kernel, the following vulnerability has been resolved: mac802154: fix data race and NULL deref on local->assocdev local->assocdev is shared between the association path and the association-response worker without common synchronization. mac802154performassociation() stores the coordinator pointer and waits for a response. Its timeout and error paths clear the pointer and return to mac802154associate(), which may then free the coordinator object. Meanwhile, mac802154rxmaccmdworker() may observe the associating bit and enter mac802154processassociationresp(), which dereferences assocdev. The worker's bit test and the handler's pointer dereference are not atomic with respect to cleanup. Cleanup can clear assocdev between them, causing a NULL dereference, or free the coordinator while the response handler still uses the pointer. The recorded result is exposed to the same window. assocstatus and assocaddr are written by the handler but read by the association path while the associating bit is still set, so a second response for the same request - a malicious one, for instance - can replace them between those reads and leave the caller with an incoherent status and address…

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 October 2026
Last updated: 30 October 2026
Assigner: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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