CVE-2026-68311

/// Technical description

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

wifi: mt76: mt7925: guard link STA in decap offload

mt7925_sta_set_decap_offload() iterates over the vif valid_links mask

when updating decap offload state for an MLO station. The station may not

have a link STA for every valid link of the vif, so mt792x_sta_to_link()

can return NULL for a link that belongs to the vif but not to the station.

The function currently dereferences mlink before checking whether the

link WCID is ready. If mlink is NULL, setting or clearing

MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer.

Skip links without a station link before touching mlink->wcid.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References