Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38432

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/07/2025
Last modified:
19/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: netpoll: Initialize UDP checksum field before checksumming<br /> <br /> commit f1fce08e63fe ("netpoll: Eliminate redundant assignment") removed<br /> the initialization of the UDP checksum, which was wrong and broke<br /> netpoll IPv6 transmission due to bad checksumming.<br /> <br /> udph-&gt;check needs to be set before calling csum_ipv6_magic().

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.15 (including) 6.15.5 (excluding)
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools