CVE-2026-53102

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req() mt76_connac_mcu_alloc_sta_req() allocates an skb which is expected to be freed eventually by mt76_mcu_skb_send_msg(). However, currently if an intermediate function fails before sending, the allocated skb is leaked. Specifically, mt76_connac_mcu_sta_wed_update() and mt76_connac_mcu_sta_key_tlv() may fail, leading to an immediate memory leak in the error path. Fix this by explicitly freeing the skb in these error paths. Commit 7c0f63fe37a5 ("wifi: mt76: mt7996: fix memory leak on mt7996_mcu_sta_key_tlv error") made a similar change. Compile tested only. Issue found using a prototype static analysis tool and code review.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42Patch
• https://git.kernel.org/stable/c/eb466406d2094deefadc2cd6ddb4f6eeb086d1b4Patch
• https://git.kernel.org/stable/c/7de35b99503012e57bec027e98ed53f881518b5b
• https://git.kernel.org/stable/c/8527ac1bce87aaabde6755e8e6eb2a9f439d1292