In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7915: guard HE capability lookups
mt7915_mcu_bss_he_tlv() and mt7915_mcu_sta_bfer_tlv() both run after checking HE support, then dereference the HE PHY capability returned by mt76_connac_get_he_phy_cap(). That helper can return NULL when no capability entry matches the vif type.
Fetch the capability before appending the TLV and skip the HE-specific setup when no matching capability is available.
References
- https://git.kernel.org/stable/c/23a2b98e754da04e0e90314d5fa8ca44349590fb
- https://git.kernel.org/stable/c/6f99a5667c6c7c3e0da1d3c4dc8dfb103042609e
- https://git.kernel.org/stable/c/871549814eb4da081f1e93cc0c7ea626a310a966
- https://git.kernel.org/stable/c/8e9db062654a388d0fa587acbeeae68dd33eba41
- https://git.kernel.org/stable/c/a031f454f14e3e76ad03bcb23918e1a82b4b0869