CVE-2026-99060 is a vulnerability in Linux Kernel
Published on October 23, 2026
wifi: mt76: mt7603: initialize global station WCID
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7603: initialize global station WCID
mt7603 uses a driver-private global station WCID for frames that have
neither a station nor a vif, including frames injected through a monitor
interface. Unlike the core global WCID initialized by
mt76_register_device(), this WCID is published without ever being passed
to mt76_wcid_init().
Since commit 0335c034e726 ("wifi: mt76: fix race condition related to
checking tx queue fill status"), mt76_tx() queues every such frame on the
WCID's tx_pending or tx_offchannel queue and links its tx_list. The first
injected frame therefore reaches __skb_queue_tail() with an uninitialized
sk_buff_head and dereferences a NULL prev pointer.
Initialize the WCID before publishing it.
The fix was tested on an MT7603 PCIe device. Three wildcard probe requests
were injected through a monitor interface. The hardware queue head and tail
advanced from 0 to 3 and a second radio captured the third request over the
air. No oops or reset occurred. After restoring AP mode, a 150 MB transfer
also completed without a reset.
Products Associated with CVE-2026-99060
Want to know whenever a new CVE is published for Linux Kernel? stack.watch will email you.
Affected Versions
Linux:- Version d2defcddfe90b3be0cfccc2482495ab1fb759586 and below 99b8bd6323e6fc69615af828522878b7acb77bff is affected.
- Version 0335c034e7265d36d956e806f33202c94a8a9860 and below e454ec553996f21085657c96c8a605e2d89a81a6 is affected.
- Version 0335c034e7265d36d956e806f33202c94a8a9860 and below dd117d17e8aa2e89f857fb708e5b770709fb81cb is affected.
- Version 0335c034e7265d36d956e806f33202c94a8a9860 and below 19d6fa087dcf242223645828b8282d4040bad168 is affected.
- Version 0335c034e7265d36d956e806f33202c94a8a9860 and below 456de496b53ae73e6e3020fec815dbdc88aa7c07 is affected.
- Version 6.6.48 and below 6.6.160 is affected.
- Version 6.7 is affected.
- Before 6.7 is unaffected.
- Version 6.6.160, <= 6.6.* is unaffected.
- Version 6.12.113, <= 6.12.* is unaffected.
- Version 6.18.57, <= 6.18.* is unaffected.
- Version 7.2.11, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.