{"id":"CVE-2025-38432","summary":"net: netpoll: Initialize UDP checksum field before checksumming","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: netpoll: Initialize UDP checksum field before checksumming\n\ncommit f1fce08e63fe (\"netpoll: Eliminate redundant assignment\") removed\nthe initialization of the UDP checksum, which was wrong and broke\nnetpoll IPv6 transmission due to bad checksumming.\n\nudph-\u003echeck needs to be set before calling csum_ipv6_magic().","modified":"2026-04-02T12:47:58.565148Z","published":"2025-07-25T14:24:13.766Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38432.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38432.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38432"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f1fce08e63fe1a2a8b8106b93b7244a39830edae"},{"fixed":"353016ec159f939a380ff6746476a779367ba9a3"},{"fixed":"f5990207026987a353d5a95204c4d9cb725637fd"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38432.json"}}],"schema_version":"1.7.5"}