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CVE-2026-90378— wifi: mt76: mt792x: Fix memory leak in SDIO TX path

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： wifi: mt76: mt792x: 修复 SDIO 发送路径中的内存泄漏 当 在 SDIO 发送路径中返回错误时， 未被释放，从而导致内存泄漏。这种情况可能发生在零长度帧（例如 WNM NULL 帧）被丢弃以潜在的硬件发送挂起时。 通过修复此问题，确保在 失败时，使用 正确释放 。

AI Predicted 3.5 Difficulty: Hard EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1059.006 · Python

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b747fa343817fd322b4463dda99d28fc51e19c52< b64d196280aff8494ba6fb387e37b18479c99b83 affected
b747fa343817fd322b4463dda99d28fc51e19c52< 9ef1351209d42b7d96604f2a13d7ea8215a24e07 affected
b747fa343817fd322b4463dda99d28fc51e19c52< c2c7f16f2c62f79f7c381e500afa7123580742a5 affected
b747fa343817fd322b4463dda99d28fc51e19c52< 6a8000c76dc34490a2bb321ad1a5f882a2ccab7c affected
b747fa343817fd322b4463dda99d28fc51e19c52< ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d affected
b747fa343817fd322b4463dda99d28fc51e19c52< 6a342db7a6502bc6781579145e05d4d4731786ab affected
b747fa343817fd322b4463dda99d28fc51e19c52< 808f2767d4217a5b96f674288573b9b89d432eed affected
5.12 affected
… +8 more rows
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I. Basic Information for CVE-2026-90378

Vulnerability Information
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Vulnerability Title
wifi: mt76: mt792x: Fix memory leak in SDIO TX path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: Fix memory leak in SDIO TX path When tx_prepare_skb() returns an error in the SDIO TX path, the skb is not freed, leading to a memory leak. This can occur when zero-length frames (such as WNM NULL frames) are dropped to prevent potential hardware TX hangs. Fix this by properly releasing the skb with ieee80211_tx_status_ext() when tx_prepare_skb() fails.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux b747fa343817fd322b4463dda99d28fc51e19c52 ~ b64d196280aff8494ba6fb387e37b18479c99b83 -
Linux Linux 5.12 -

II. Public POCs for CVE-2026-90378

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III. Intelligence Information for CVE-2026-90378

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Patches & Fixes for CVE-2026-90378 (7)

Same Patch Batch · Linux · 2026-09-17 · 600 CVEs total

CVE-2026-90173 9.8 CRITICAL smb: smbdirect: free completion queues with ib_free_cq()
CVE-2026-92489 9.8 CRITICAL xfrm: Fix skb double-free in xfrm_dev_direct_output()
CVE-2026-90151 9.8 CRITICAL NFSv4: remove callback IDR entry on client allocation failure
CVE-2026-90235 9.8 CRITICAL sunrpc: xprtsock: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
CVE-2026-90104 9.8 CRITICAL NFSv4.1: zero referring call lists before decoding
CVE-2026-90110 9.4 CRITICAL inetpeer: randomize RB-tree node comparison using SipHash
CVE-2026-90413 9.1 CRITICAL IB/isert: reject login PDUs declaring more data than was received
CVE-2026-90414 9.1 CRITICAL IB/isert: reject PDUs declaring more data than was received
CVE-2026-90230 9.1 CRITICAL nvmet: fix heap out-of-bounds read in nvmet_auth_negotiate()
CVE-2026-90255 8.8 HIGH Bluetooth: hci_conn: fix the SCO setup context lifetime
CVE-2026-90329 8.8 HIGH HID: synchronize input before cleaning up a failed probe
CVE-2026-90357 8.8 HIGH wifi: mt76: mt7915: unlink TWT flow if the MCU rejects the agreement
CVE-2026-90367 8.8 HIGH wifi: mt76: mt7996: hold dev->mt76.mutex while disabling tx worker in SER
CVE-2026-90256 8.8 HIGH Bluetooth: L2CAP: use proto_lock for l2cap_data to fix l2cap_disconn_ind
CVE-2026-90371 8.8 HIGH wifi: mt76: fix RXDMAD_C buffer recycling race
CVE-2026-93189 8.8 HIGH HID: core: quiesce input in hid_hw_stop() to prevent use-after-free
CVE-2026-90425 8.8 HIGH iommu/tegra241-cmdqv: Require exactly one Stream ID for a vSID
CVE-2026-90240 8.8 HIGH iommu/vt-d: Flush context cache with correct SID when tearing down aliases
CVE-2026-90162 8.8 HIGH ksmbd: defer publishing granted locks to prevent UAF/double-free race
CVE-2026-90286 8.8 HIGH drm/amdgpu/gfx6: Use PFP on the compute queues too

Showing top 20 of 600 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-90378

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