CVE-2026-90350

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: reject out-of-range link ids in mt76_vif_link()

mt76_vif_link() indexes mvif->link[] without validating link_id, but callers pass mvif->deflink_id / msta->deflink_id, which hold IEEE80211_LINK_UNSPECIFIED (0xf) until the first link has been added. Since IEEE80211_MLD_MAX_NUM_LINKS is 15, that reads one element past the end of the array, aliasing mt76_vif_data.offchannel_link.

Reachable via mt7996_set_tsf()/mt7996_offset_tsf() and mt7996_net_fill_forward_path(). Bounds check link_id and return NULL, matching mt7996_sta_link() and mt7996_sta_link_protected().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxa9384b36a42afc2d715eb74c19a7ee558f09ef82 < 13f6a9c786022d5213e84d494cc8717c378f5395affected
LinuxLinuxa9384b36a42afc2d715eb74c19a7ee558f09ef82 < c1442c345ca8da857fadea1d0797b97347ab6984affected
LinuxLinuxa9384b36a42afc2d715eb74c19a7ee558f09ef82 < 9ba744a28c26eaa5cae930688a22e01888395308affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References