CVE-2025-38432 — Out-of-bounds Read in Linux

CWE-125 — Out-of-bounds Read6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 92.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
LinuxLinux KernelDebian Linux+3 more
Timeline
PublishedJul 25

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().

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages6 packages

▶NVDlinux/linux_kernel6.15 — 6.15.5+1
▶CVEListV5linux/linuxf1fce08e63fe1a2a8b8106b93b7244a39830edae — 353016ec159f939a380ff6746476a779367ba9a3+2
▶debiandebian/linux

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-wj97-6gr4-gfmq: In the Linux kernel, the following vulnerability has been resolved: net: netpoll: Initialize UDP checksum field before checksumming commit f1fce08e6↗2025-07-25
▶
OSV
CVE-2025-38432: In the Linux kernel, the following vulnerability has been resolved: net: netpoll: Initialize UDP checksum field before checksumming commit f1fce08e63f↗2025-07-25
▶

📋Vendor Advisories

3
Red Hat
kernel: net: netpoll: Initialize UDP checksum field before checksumming↗2025-07-25
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Debian
CVE-2025-38432: linux - In the Linux kernel, the following vulnerability has been resolved: net: netpol...↗2025
▶
Microsoft
An issue was discovered in the Linux kernel before 6.3.10. fs/smb/server/smb2misc.c in ksmbd does not validate the relationship between the command payload size and the RFC1002 length specification le↗2023-07-11
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CVE-2025-38432 — Out-of-bounds Read in Linux | cvebase