{"api_version":"1","generated_at":"2026-08-16T08:59:25+00:00","cve":"CVE-2026-74475","urls":{"html":"https://cve.report/CVE-2026-74475","api":"https://cve.report/api/cve/CVE-2026-74475.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74475","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74475"},"summary":{"title":"vxlan: use neigh_ha_snapshot() in route_shortcircuit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use neigh_ha_snapshot() in route_shortcircuit()\n\nThe neighbour hardware address n->ha can be updated asynchronously by the\nneighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without\nholding the seqlock loop can lead to torn reads or reading a partially updated\nMAC address.\n\nUse neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under\nread_seqbegin()/read_seqretry() lock protection before using it.\n\nNote that arp_reduce() and neigh_reduce() seem to have the same issue\nleft for future patches.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:17:52","updated_at":"2026-08-15 13:17:52"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0","name":"https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3","name":"https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f","name":"https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0","name":"https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d","name":"https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74475","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74475","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4f67addf158f98f8197e08974966b18480dc751 d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4f67addf158f98f8197e08974966b18480dc751 ec341bb76d77b4c2948764375ee6bfeef4bb41c3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4f67addf158f98f8197e08974966b18480dc751 ff89415d34c3ab9f5312316423122e664ed3524f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4f67addf158f98f8197e08974966b18480dc751 05f2987f73daa05333fd713d05546142f9f7c5f0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e4f67addf158f98f8197e08974966b18480dc751 8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.8","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.8 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc6 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/vxlan/vxlan_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0","status":"affected","version":"e4f67addf158f98f8197e08974966b18480dc751","versionType":"git"},{"lessThan":"ec341bb76d77b4c2948764375ee6bfeef4bb41c3","status":"affected","version":"e4f67addf158f98f8197e08974966b18480dc751","versionType":"git"},{"lessThan":"ff89415d34c3ab9f5312316423122e664ed3524f","status":"affected","version":"e4f67addf158f98f8197e08974966b18480dc751","versionType":"git"},{"lessThan":"05f2987f73daa05333fd713d05546142f9f7c5f0","status":"affected","version":"e4f67addf158f98f8197e08974966b18480dc751","versionType":"git"},{"lessThan":"8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d","status":"affected","version":"e4f67addf158f98f8197e08974966b18480dc751","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/vxlan/vxlan_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.8"},{"lessThan":"3.8","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"3.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc6","versionStartIncluding":"3.8","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use neigh_ha_snapshot() in route_shortcircuit()\n\nThe neighbour hardware address n->ha can be updated asynchronously by the\nneighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without\nholding the seqlock loop can lead to torn reads or reading a partially updated\nMAC address.\n\nUse neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under\nread_seqbegin()/read_seqretry() lock protection before using it.\n\nNote that arp_reduce() and neigh_reduce() seem to have the same issue\nleft for future patches."}],"providerMetadata":{"dateUpdated":"2026-08-15T12:27:10.685Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0"},{"url":"https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3"},{"url":"https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f"},{"url":"https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0"},{"url":"https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d"}],"title":"vxlan: use neigh_ha_snapshot() in route_shortcircuit()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74475","datePublished":"2026-08-15T12:27:10.685Z","dateReserved":"2026-08-15T05:44:03.903Z","dateUpdated":"2026-08-15T12:27:10.685Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:17:52","lastModifiedDate":"2026-08-15 13:17:52","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74475","Ordinal":"1","Title":"vxlan: use neigh_ha_snapshot() in route_shortcircuit()","CVE":"CVE-2026-74475","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74475","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use neigh_ha_snapshot() in route_shortcircuit()\n\nThe neighbour hardware address n->ha can be updated asynchronously by the\nneighbour subsystem, protected by n->ha_lock seqlock. Reading n->ha without\nholding the seqlock loop can lead to torn reads or reading a partially updated\nMAC address.\n\nUse neigh_ha_snapshot() in route_shortcircuit() to safely copy n->ha under\nread_seqbegin()/read_seqretry() lock protection before using it.\n\nNote that arp_reduce() and neigh_reduce() seem to have the same issue\nleft for future patches.","Type":"Description","Title":"vxlan: use neigh_ha_snapshot() in route_shortcircuit()"}]}}}