Bug 2451177 (CVE-2026-23315)

Summary: CVE-2026-23315 kernel: wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `mt76` Wi-Fi driver. This vulnerability, an out-of-bounds (OOB) access, occurs due to an insufficient check of frame length before accessing management fields within the `mt76_connac2_mac_write_txwi_80211()` function. An attacker could potentially exploit this to cause memory corruption, which may lead to system instability or a denial of service (DoS).
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Description OSIDB Bzimport 2026-03-25 11:02:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: Fix possible oob access in mt76_connac2_mac_write_txwi_80211()

Check frame length before accessing the mgmt fields in
mt76_connac2_mac_write_txwi_80211 in order to avoid a possible oob
access.

[fix check to also cover mgmt->u.action.u.addba_req.capab,
correct Fixes tag]
Comment 1 Alexander B 2026-03-25 17:58:27 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026032529-CVE-2026-23315-9ac1@gregkh/T