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CVE-2025-37927

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid There is a string parsing logic error which can lead to an overf…

Published May 20, 2025CWE-787EPSS 0.29%

Overview

CVE-2025-37927 is a high-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid

There is a string parsing logic error which can lead to an overflow of hid

or uid buffers. Comparing ACPIID_LEN against a total string length doesn't

take into account the lengths of individual hid and uid buffers so the

check is insufficient in some cases. For example if the length of hid

string is 4 and the length of the uid string is 260, the length of str

will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer

which size is 256.

The same applies to the hid string with length 13 and uid string with

length 250.

Check the length of hid and uid strings separately to prevent

buffer overflow.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/10d901a95f8e766e5aa0bb9a983fb41271f64718Refgit.kernel.org/stable/c/13d67528e1ae4486e9ab24b70122fab104c73c29Refgit.kernel.org/stable/c/2b65060c84ee4d8dc64fae6d2728b528e9e832e1Refgit.kernel.org/stable/c/466d9da267079a8d3b69fa72dfa3a732e1f6dbb5Refgit.kernel.org/stable/c/8dee308e4c01dea48fc104d37f92d5b58c50b96cRefgit.kernel.org/stable/c/a65ebfed65fa62797ec1f5f1dcf7adb157a2de1eRefgit.kernel.org/stable/c/c3f37faa71f5d26dd2144b3f2b14525ec8f5e41fRefgit.kernel.org/stable/c/c8bdfc0297965bb13fa439d36ca9c4f7c8447f0fReflists.debian.org/debian-lts-announce/2025/08/msg00010.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00007.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37927?

CVE-2025-37927 is a high-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-37927?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-37927?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-37927?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37927 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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