What is CVE-2025-38432?

CVE-2025-38432 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-07-25.

How severe is CVE-2025-38432?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2025-38432

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().

EPSS: 0.001 (3.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions f1fce08e63fe1a2a8b8106b93b7244a39830edae, 6.15, 0
Linux Linux_kernel — versions 6.16

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2025-38432?: CVE-2025-38432 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2025-07-25.
How severe is CVE-2025-38432?: Medium severity. CVSS v3 base score is 5.5 out of 10.