Medium 5.5Published Jun 24, 2026

CVE-2026-53102wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()

Updated under an hour ago (Oct 26, 2026, 10:10 PM ET)

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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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 6683d988089ce0e80bd859a9493333b6b272420e before a2af91af9536922edc3f63de90c3f1fe9db71717; 6683d988089ce0e80bd859a9493333b6b272420e builds before 7de35b99503012e57bec027e98ed53f881518b5b; from 6683d988089ce0e80bd859a9493333b6b272420e before 8527ac1bce87aaabde6755e8e6eb2a9f439d1292; from 6683d988089ce0e80bd859a9493333b6b272420e before eb466406d2094deefadc2cd6ddb4f6eeb086d1b4; from 6683d988089ce0e80bd859a9493333b6b272420e before c41075ce8cf05ed8c0e7b7efef000dce548ffc42	CNA record
linux linux_kernel linux:linux_kernel	from 5.18 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/a2af91af9536922edc3f63de90c3f1fe9db71717
https://git.kernel.org/stable/c/7de35b99503012e57bec027e98ed53f881518b5b
https://git.kernel.org/stable/c/8527ac1bce87aaabde6755e8e6eb2a9f439d1292
https://git.kernel.org/stable/c/eb466406d2094deefadc2cd6ddb4f6eeb086d1b4	patch
https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.