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Medium severity5.5NVD Advisory· Published Jul 25, 2025· Updated Jun 17, 2026

CVE-2025-38432

CVE-2025-38432

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().

Affected products

7
  • Linux/Kernel6 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 5 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.15,<6.15.5
    • 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:*:*:*:*:*:*
    • (no CPE)
    • (no CPE)range: 6.15
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.15.0, < 6.15.5

Patches

Vulnerability mechanics

References

2

News mentions

0

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