#VU113308 Buffer overflow in Linux kernel - CVE-2025-38401

Vulnerability identifier: #VU113308

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-38401

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to memory corruption within the msdc_prepare_data() and msdc_ops_request() functions in drivers/mmc/host/mtk-sd.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/3419bc6a7b65cbbb91417bb9970208478e034c79
https://git.kernel.org/stable/c/48bf4f3dfcdab02b22581d8e350a2d23130b72c0
https://git.kernel.org/stable/c/5ac9e9e2e9cd6247d8c2d99780eae4556049e1cc
https://git.kernel.org/stable/c/61cdd663564674ea21ceb50aa9d3697cbe9e45f9
https://git.kernel.org/stable/c/63e8953f16acdcb23e2d4dd8a566d3c34df3e200
https://git.kernel.org/stable/c/a5f5f67b284d81776d4a3eb1f8607e4b7f91f11c
https://git.kernel.org/stable/c/d54771571f74a82c59830a32e76af78a8e57ac69
https://git.kernel.org/stable/c/f5de469990f19569627ea0dd56536ff5a13beaa3

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?