Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-06-24T00:00:00 kernel: wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req() 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-772

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.

A flaw was found in the Linux kernel's mt76 Wi-Fi driver. This vulnerability, a memory leak, occurs when the mt76_connac_mcu_alloc_sta_req() function allocates a socket buffer (skb) that is not properly freed if subsequent operations, such as mt76_connac_mcu_sta_wed_update() or mt76_connac_mcu_sta_key_tlv(), fail. This can lead to a gradual consumption of system memory, potentially impacting system stability and performance over time.

Red Hat Enterprise Linux 10 Fix deferred kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Fix deferred kernel Red Hat Enterprise Linux 8 Fix deferred kernel-rt Red Hat Enterprise Linux 9 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-53102 https://nvd.nist.gov/vuln/detail/CVE-2026-53102 https://lore.kernel.org/linux-cve-announce/2026062412-CVE-2026-53102-14ff@gregkh/T