{"id":"CVE-2026-74705","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74705","summary":"udp: fix potential use-after-free in tunnel segmentation","details":"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head,\nthe saved UDP header pointer is no longer valid.\n\nGet the UDP header after the pull to avoid a potential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.","published":"2026-08-22T15:33:04.110Z","modified":"2026-08-24T11:47:16.547131856Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"5.10.265"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/19d89b13a43640b2da2f277ee462d919d988cb6f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1ae134c012e10384cdac420b5cc6e0615cde0b55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5161e67c561c4f28a5d9335a6e859b02511de92b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/588d4a6795d99d080f74ef0b5f391ea8c453ae5d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/64d322c288577793eedd352b96ef75234ed380fe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6a733a38b983d8c2e222f13968209010cf44de87"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b3df61bb745eb5201eac22679a2839d4ccbf3442"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d0f86fb36eb260abd10007b62c9dcc1028e03e61"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74705.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74705"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-24T11:47:16.547131856Z"}}