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🛡️ CVE-2025-37927 — debian-linux

🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-787 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid

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.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2025-37927 is classified as CWE-787: Out-of-bounds Write. Data is written past the end or before the start of a buffer, corrupting whatever is stored there.

Affected software

CVE-2025-37927 is recorded against 3 packages.

  • debian-linux
  • kernel (from 6.13.0 up to 6.14.6)
  • linux-kernel

Timeline and source

Published on 20 May 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
lists.debian.org
lists.debian.org

CVE-2025-37927 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-787
Public Exploit ✅ No
Source NVD
Published 2025-05-20
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
debian-linux — —
kernel 6.13.0 6.14.6
linux-kernel — —

References

Similar Threats

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