CVE-2025-38401: debian linux Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mtk-sd: Prevent memory corruption from DMA map failure If msdc_prepare_data() fails to map the DMA region, the request is not prepared for data receiving, but msdc_start_data() proceeds the DMA with previous setting. Since this will lead a memory corruption, we have to stop the request operation soon after the msdc_prepare_data() fails to prepare it.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.2 — 5.4.296
linux	linux_kernel	5.5 — 5.10.240
linux	linux_kernel	5.11 — 5.15.187
linux	linux_kernel	5.16 — 6.1.144
linux	linux_kernel	6.2 — 6.6.97
linux	linux_kernel	6.7 — 6.12.37
linux	linux_kernel	6.13 — 6.15.6
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
debian	debian_linux	All

References

Advisories & Patches

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

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Frequently Asked Questions

What is CVE-2025-38401? +

In the Linux kernel, the following vulnerability has been resolved: mtk-sd: Prevent memory corruption from DMA map failure If msdc_prepare_data() fails to map the DMA region, the request is not prepared for data receiving, but msdc_start_data() proceeds the DMA with previous setting. Since this will lead a memory corruption, we have to stop the request operation soon after the msdc_prepare_data() fails to prepare it. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38401? +

CVE-2025-38401 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-38401? +

CVE-2025-38401 affects products from debian, linux, specifically: debian_linux, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-38401? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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