CVE-2025-38432

net: netpoll: Initialize UDP checksum field before checksumming

published July 25, 2025

CVSS
—
EPSS
0%
Percentile
3.7
In the wild
Unconfirmed
What it is

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().

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00148 · 3.7th percentile
Published
2025-07-25T14:24Z
EPSS history
Timeline
  • 25 JUL 14:24Z
    net: netpoll: Initialize UDP checksum field before checksumming
    cvelistv5