CVE-2025-38432 (GCVE-0-2025-38432)
Vulnerability from cvelistv5
Published
2025-07-25 14:24
Modified
2025-07-28 04:22
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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().
References
Impacted products
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "net/core/netpoll.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "353016ec159f939a380ff6746476a779367ba9a3", "status": "affected", "version": "f1fce08e63fe1a2a8b8106b93b7244a39830edae", "versionType": "git" }, { "lessThan": "f5990207026987a353d5a95204c4d9cb725637fd", "status": "affected", "version": "f1fce08e63fe1a2a8b8106b93b7244a39830edae", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "net/core/netpoll.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.15" }, { "lessThan": "6.15", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.5", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.15.5", "versionStartIncluding": "6.15", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.16", "versionStartIncluding": "6.15", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "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()." } ], "providerMetadata": { "dateUpdated": "2025-07-28T04:22:04.875Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3" }, { "url": "https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd" } ], "title": "net: netpoll: Initialize UDP checksum field before checksumming", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2025-38432", "datePublished": "2025-07-25T14:24:13.766Z", "dateReserved": "2025-04-16T04:51:24.015Z", "dateUpdated": "2025-07-28T04:22:04.875Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-38432\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-25T15:15:28.263\",\"lastModified\":\"2025-07-25T15:29:19.837\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/353016ec159f939a380ff6746476a779367ba9a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f5990207026987a353d5a95204c4d9cb725637fd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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