{"api_version":"1","generated_at":"2026-08-22T21:53:02+00:00","cve":"CVE-2026-74705","urls":{"html":"https://cve.report/CVE-2026-74705","api":"https://cve.report/api/cve/CVE-2026-74705.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74705","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74705"},"summary":{"title":"udp: fix potential use-after-free in tunnel segmentation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix potential use-after-free in tunnel segmentation\n\n__skb_udp_tunnel_segment() gets the UDP header before ensuring the\ntunnel header is in the skb head. If the pull reallocates skb->head,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential use-after-free.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-22 16:16:45","updated_at":"2026-08-22 16:16:45"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55","name":"https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe","name":"https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d","name":"https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b","name":"https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61","name":"https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87","name":"https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f","name":"https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442","name":"https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74705","name":"CVE 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the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix potential use-after-free in tunnel segmentation\n\n__skb_udp_tunnel_segment() gets the UDP header before ensuring the\ntunnel header is in the skb head. If the pull reallocates skb->head,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential use-after-free."}],"providerMetadata":{"dateUpdated":"2026-08-22T15:33:04.110Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87"},{"url":"https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f"},{"url":"https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442"},{"url":"https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55"},{"url":"https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b"},{"url":"https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe"},{"url":"https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d"},{"url":"https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61"}],"title":"udp: fix potential use-after-free in tunnel segmentation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74705","datePublished":"2026-08-22T15:33:04.110Z","dateReserved":"2026-08-15T05:44:03.927Z","dateUpdated":"2026-08-22T15:33:04.110Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-22 16:16:45","lastModifiedDate":"2026-08-22 16:16:45","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74705","Ordinal":"1","Title":"udp: fix potential use-after-free in tunnel segmentation","CVE":"CVE-2026-74705","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74705","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nudp: fix potential use-after-free in tunnel segmentation\n\n__skb_udp_tunnel_segment() gets the UDP header before ensuring the\ntunnel header is in the skb head. If the pull reallocates skb->head,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential use-after-free.","Type":"Description","Title":"udp: fix potential use-after-free in tunnel segmentation"}]}}}