wifi: mt76: mt7603: initialize global station WCID
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.160, 6.12.113, 6.18.57, 7.2.11
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- Linux Linux
From d2defcddfe90b3be0cfccc2482495ab1fb759586 · fixed in 99b8bd6323e6fc69615af828522878b7acb77bff; From 0335c034e7265d36d956e806f33202c94a8a9860 · fixed in e454ec553996f21085657c96c8a605e2d89a81a6; From 0335c034e7265d36d956e806f33202c94a8a9860 · fixed in dd117d17e8aa2e89f857fb708e5b770709fb81cb; From 0335c034e7265d36d956e806f33202c94a8a9860 · fixed in 19d6fa087dcf242223645828b8282d4040bad168; From 0335c034e7265d36d956e806f33202c94a8a9860 · fixed in 456de496b53ae73e6e3020fec815dbdc88aa7c07; From 6.6.48 · fixed in 6.6.160
- Linux Linux
6.7
- KernelLinux
fixed in 6.6.160; From 6.7.0 · fixed in 6.12.113; fixed in 6.18.57; From 6.13.0 · fixed in 7.2.11