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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

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 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 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 ≤ *

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Fixes

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

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

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

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

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

Link: CVE-2026-90378

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-90378

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.