CVE-2025-38432

net: netpoll: Initialize UDP checksum field before checksumming

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().

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3
https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd

Frequently Asked Questions

What is the severity of CVE-2025-38432?: CVE-2025-38432 has not yet been assigned a CVSS score.
How to fix CVE-2025-38432?: To fix CVE-2025-38432, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38432 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38432 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38432?: CVE-2025-38432 affects Linux Linux, Linux Linux.

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