CVE-2026-90378 - Vulnerability Details

- wifi: mt76: mt792x: Fix memory leak in SDIO TX path

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.

Published: 2026-09-17

Score: n/a

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< b64d196280aff8494ba6fb387e37b18479c99b83
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< 9ef1351209d42b7d96604f2a13d7ea8215a24e07
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< c2c7f16f2c62f79f7c381e500afa7123580742a5
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< 6a8000c76dc34490a2bb321ad1a5f882a2ccab7c
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< 6a342db7a6502bc6781579145e05d4d4731786ab
`b747fa343817fd322b4463dda99d28fc51e19c52`	affected	< 808f2767d4217a5b96f674288573b9b89d432eed

Linux

affected

Version	Status	Constraints
`5.12`	affected	—
`0`	unaffected	< 5.12
`5.15.221`	unaffected	≤ 5.15.*
`6.1.188`	unaffected	≤ 6.1.*
`6.6.157`	unaffected	≤ 6.6.*
`6.12.110`	unaffected	≤ 6.12.*
`6.18.52`	unaffected	≤ 6.18.*
`7.2.6`	unaffected	≤ 7.2.*
`7.3-rc1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[b747fa343817fd322b4463dda99d28fc51e19c52,b64d196280aff8494ba6fb387e37b18479c99b83)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,9ef1351209d42b7d96604f2a13d7ea8215a24e07)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,c2c7f16f2c62f79f7c381e500afa7123580742a5)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,6a8000c76dc34490a2bb321ad1a5f882a2ccab7c)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,6a342db7a6502bc6781579145e05d4d4731786ab)`	affected	code_commit	—
`[b747fa343817fd322b4463dda99d28fc51e19c52,808f2767d4217a5b96f674288573b9b89d432eed)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`5.12`	affected	generic	—
`[0,5.12)`	unaffected	generic	—
`[5.15.221,5.15.*]`	unaffected	generic	—
`[6.1.188,6.1.*]`	unaffected	generic	—
`[6.6.157,6.6.*]`	unaffected	generic	—
`[6.12.110,6.12.*]`	unaffected	generic	—
`[6.18.52,6.18.*]`	unaffected	generic	—
`[7.2.6,7.2.*]`	unaffected	generic	—
`[7.3-rc1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00172.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab
https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c
https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed
https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07
https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83
https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5
https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d

History

Sat, 19 Sep 2026 14:15:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-401

Thu, 17 Sep 2026 16:30:00 +0000

Type	Values Removed	Values Added
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.
Title		wifi: mt76: mt792x: Fix memory leak in SDIO TX path
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07 https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83 https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5 https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-09-17T16:09:16.655Z

Updated: 2026-09-17T16:09:16.655Z

Reserved: 2026-09-11T19:38:34.808Z

Link: CVE-2026-90378

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-17T17:17:37.040

Modified: 2026-09-17T17:17:37.040

Link: CVE-2026-90378

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-19T14:00:15Z

Weaknesses

CWE-401
Missing Release of Memory after Effective Lifetime

Tracking

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