CVE-2025-38432

MEDIUM

Linux Kernel 6.15-6.15.4 - Denial of Service via UDP Checksum Initialization

Title source: llm

Description

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

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3

Patch

https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd

Scores

CVSS v3 5.5

EPSS 0.0014

EPSS Percentile 3.5%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published

Products (9)

linux/Kernel 6.15.0 - 6.15.5linux

Linux/Linux < 6.15

Linux/Linux 6.15

Linux/Linux 6.15.5 - 6.15.*

Linux/Linux 6.16

Linux/Linux f1fce08e63fe1a2a8b8106b93b7244a39830edae - 353016ec159f939a380ff6746476a779367ba9a3

Linux/Linux f1fce08e63fe1a2a8b8106b93b7244a39830edae - f5990207026987a353d5a95204c4d9cb725637fd

linux/linux_kernel 6.16 rc1 (3 CPE variants)

linux/linux_kernel 6.15 - 6.15.5

Published Jul 25, 2025

Tracked Since Feb 18, 2026