wifi: mt76: mt7996: clear stale link state on full reset
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.18.57, 7.2.6
- 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: mt7996: clear stale link state on full reset After a full chip reset, mac80211 reconfig replays interface, link and channel context setup. mt7996_vif_link_add() short-circuits when the link_id is still marked in mvif->valid_links, a state introduced for postponing link teardown to interface removal. The reset path frees the link structures without clearing those bits, so the replayed setup never re-creates dev_info/bss_info/STA records in the restarted firmware and never re-registers the link wcid, leaving the device inoperative. The reset path also leaks every allocated MLD index: per-link indices and the per-vif group/remap indices are re-allocated from scratch during reconfig, but the old bits stay set in the masks, so repeated full resets exhaust the index space. Clear valid_links in the reset vif iterator and reset the MLD index masks alongside the existing omac_mask clearing.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From ace5d3b6b49e8391beb4d7244348ba7da5298878 · fixed in e512823aabbdc91444b9d886638f059ef58e86b1; From ace5d3b6b49e8391beb4d7244348ba7da5298878 · fixed in fc3762724a36867c1749233c43368c2637ecf029; From ace5d3b6b49e8391beb4d7244348ba7da5298878 · fixed in 75d2a4e2129b58bb0ddb842387299038495aad2a
- Linux Linux
6.18
- KernelLinux
From 6.18.0 · fixed in 6.18.57; From 6.19.0 · fixed in 7.2.6