CVE-2026-90378

medium

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.

References

https://git.kernel.org/stable/c/ddf6a17d8e3d0dbb841c13c10d7c1340a138a80d

https://git.kernel.org/stable/c/c2c7f16f2c62f79f7c381e500afa7123580742a5

https://git.kernel.org/stable/c/b64d196280aff8494ba6fb387e37b18479c99b83

https://git.kernel.org/stable/c/9ef1351209d42b7d96604f2a13d7ea8215a24e07

https://git.kernel.org/stable/c/808f2767d4217a5b96f674288573b9b89d432eed

https://git.kernel.org/stable/c/6a8000c76dc34490a2bb321ad1a5f882a2ccab7c

https://git.kernel.org/stable/c/6a342db7a6502bc6781579145e05d4d4731786ab

Details

Source: Mitre, NVD

Published: 2026-09-17

Updated: 2026-09-17

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00172