Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38688

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/09/2025
Last modified:
24/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommufd: Prevent ALIGN() overflow<br /> <br /> When allocating IOVA the candidate range gets aligned to the target<br /> alignment. If the range is close to ULONG_MAX then the ALIGN() can<br /> wrap resulting in a corrupted iova.<br /> <br /> Open code the ALIGN() using get_add_overflow() to prevent this.<br /> This simplifies the checks as we don&amp;#39;t need to check for length earlier<br /> either.<br /> <br /> Consolidate the two copies of this code under a single helper.<br /> <br /> This bug would allow userspace to create a mapping that overlaps with some<br /> other mapping or a reserved range.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.6.103 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.7 (including) 6.12.43 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.15.11 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.16 (including) 6.16.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools