{"api_version":"1","generated_at":"2026-06-26T12:32:10+00:00","cve":"CVE-2026-52985","urls":{"html":"https://cve.report/CVE-2026-52985","api":"https://cve.report/api/cve/CVE-2026-52985.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-52985","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-52985"},"summary":{"title":"netdevsim: zero initialize struct iphdr in dummy sk_buff","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: zero initialize struct iphdr in dummy sk_buff\n\nSyzbot reports a KMSAN uninit-value originating from\nnsim_dev_trap_skb_build, with the allocation also\nbeing performed in the same function.\n\nFix this by calling skb_put_zero instead of skb_put to\nguarantee zero initialization of the whole IP header.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-24 17:17:09","updated_at":"2026-06-24 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52985","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected da58f90f11f597520f226caff1d3cfc115abedc9 175556c049eaec14efde8c6475e763b7579b9de7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected da58f90f11f597520f226caff1d3cfc115abedc9 6e2cfd0904976e701d7a76b86b694e72af230ab0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected da58f90f11f597520f226caff1d3cfc115abedc9 1b7b6ae0e93b8d512e208b1378d74af052e4f4e7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected da58f90f11f597520f226caff1d3cfc115abedc9 818f7673ed7f4a29d4b9cee8184c47d6e57162b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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00:06:15"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/netdevsim/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"175556c049eaec14efde8c6475e763b7579b9de7","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"6e2cfd0904976e701d7a76b86b694e72af230ab0","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"1b7b6ae0e93b8d512e208b1378d74af052e4f4e7","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"818f7673ed7f4a29d4b9cee8184c47d6e57162b4","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"978ca6ff789f1f19c03288ac20cc1f4774e88490","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"750d0091bebf44975421268d37484ef87060d263","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"bc6002865e8c4fcf9e94975f7cf023448d8764e2","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"},{"lessThan":"35eaa6d8d6c2ee65e96f507add856e0eacf24591","status":"affected","version":"da58f90f11f597520f226caff1d3cfc115abedc9","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/netdevsim/dev.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.4"},{"lessThan":"5.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.258","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.209","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.175","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.258","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.209","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.175","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"5.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"5.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: zero initialize struct iphdr in dummy sk_buff\n\nSyzbot reports a KMSAN uninit-value originating from\nnsim_dev_trap_skb_build, with the allocation also\nbeing performed in the same function.\n\nFix this by calling skb_put_zero instead of skb_put to\nguarantee zero initialization of the whole IP header."}],"providerMetadata":{"dateUpdated":"2026-06-24T16:28:59.871Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/175556c049eaec14efde8c6475e763b7579b9de7"},{"url":"https://git.kernel.org/stable/c/6e2cfd0904976e701d7a76b86b694e72af230ab0"},{"url":"https://git.kernel.org/stable/c/1b7b6ae0e93b8d512e208b1378d74af052e4f4e7"},{"url":"https://git.kernel.org/stable/c/818f7673ed7f4a29d4b9cee8184c47d6e57162b4"},{"url":"https://git.kernel.org/stable/c/978ca6ff789f1f19c03288ac20cc1f4774e88490"},{"url":"https://git.kernel.org/stable/c/750d0091bebf44975421268d37484ef87060d263"},{"url":"https://git.kernel.org/stable/c/bc6002865e8c4fcf9e94975f7cf023448d8764e2"},{"url":"https://git.kernel.org/stable/c/35eaa6d8d6c2ee65e96f507add856e0eacf24591"}],"title":"netdevsim: zero initialize struct iphdr in dummy sk_buff","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-52985","datePublished":"2026-06-24T16:28:59.871Z","dateReserved":"2026-06-09T07:44:35.376Z","dateUpdated":"2026-06-24T16:28:59.871Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-24 17:17:09","lastModifiedDate":"2026-06-24 17:17:09","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"52985","Ordinal":"1","Title":"netdevsim: zero initialize struct iphdr in dummy sk_buff","CVE":"CVE-2026-52985","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"52985","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: zero initialize struct iphdr in dummy sk_buff\n\nSyzbot reports a KMSAN uninit-value originating from\nnsim_dev_trap_skb_build, with the allocation also\nbeing performed in the same function.\n\nFix this by calling skb_put_zero instead of skb_put to\nguarantee zero initialization of the whole IP header.","Type":"Description","Title":"netdevsim: zero initialize struct iphdr in dummy sk_buff"}]}}}