Memory leak in Linux kernel - CVE-2026-90378
Published: September 18, 2026
Vulnerability identifier: #VU151090
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90378
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a memory leak.
The vulnerability exists due to improper memory management in the mt76 SDIO transmit path when tx_prepare_skb() returns an error while processing zero-length frames. A local user can submit a zero-length frame to cause a memory leak.
Affected software
Linux kernel
How to mitigate CVE-2026-90378
Install security update from vendor's repository.
External 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