CVE-2025-38676: debian linux Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Avoid stack buffer overflow from kernel cmdline While the kernel command line is considered trusted in most environments, avoid writing 1 byte past the end of "acpiid" if the "str" argument is maximum length.

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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	5.4.237 — 5.5
linux	linux_kernel	5.10.175 — 5.10.241
linux	linux_kernel	5.15.103 — 5.15.190
linux	linux_kernel	6.1.16 — 6.1.149
linux	linux_kernel	6.2.3 — 6.6.103
linux	linux_kernel	6.7 — 6.12.44
linux	linux_kernel	6.13 — 6.16.4
linux	linux_kernel	All
linux	linux_kernel	All
debian	debian_linux	All

References

Advisories & Patches

https://git.kernel.org/stable/c/0ad8509b468fa1058f4f400a1829f29e4ccc4de8 https://git.kernel.org/stable/c/4bdb0f78bddbfa77d3ab458a21dd9cec495d317a https://git.kernel.org/stable/c/736db11c86f03e717fc4bf771d05efdf10d23acb https://git.kernel.org/stable/c/8503d0fcb1086a7cfe26df67ca4bd9bd9e99bdec https://git.kernel.org/stable/c/8f80c633cba144f721d38d9380f23d23ab7db10e https://git.kernel.org/stable/c/9ff52d3af0ef286535749e14e3fe9eceb39a8349 https://git.kernel.org/stable/c/a732502bf3bbe859613b6d7b2b0313b11f0474ac

Other References

https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Frequently Asked Questions

What is CVE-2025-38676? +

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Avoid stack buffer overflow from kernel cmdline While the kernel command line is considered trusted in most environments, avoid writing 1 byte past the end of "acpiid" if the "str" argument is maximum length. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-38676? +

CVE-2025-38676 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-2025-38676? +

CVE-2025-38676 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-2025-38676? +

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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