Bug 2516846 (CVE-2026-74322) - CVE-2026-74322 kernel: wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()
Summary: CVE-2026-74322 kernel: wifi: mt76: mt7996: Fix possible NULL pointer derefere...
Keywords:
Status: NEW
Alias: CVE-2026-74322
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-15 06:36 UTC by OSIDB Bzimport
Modified: 2026-08-20 16:59 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-15 06:36:31 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7996: Fix possible NULL pointer dereference in mt7996_mac_write_txwi_80211()

For injected frames (e.g. via radiotap), mac80211 can pass
info->control.vif = NULL, as explicitly noted in struct ieee80211_tx_info.
Check vif pointer before executing ieee80211_vif_is_mld() in
mt7996_mac_write_txwi_80211 routine in order to avoid a possible NULL
pointer dereference.
Comment 1 Keith Grant 2026-08-20 16:51:42 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081554-CVE-2026-74322-9f3d@gregkh/T
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