{"id":"CVE-2026-80735","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80735","summary":"ovpn: ensure socket is owned by ovpn before deref sk_user_data","details":"In the Linux kernel, the following vulnerability has been resolved:\n\novpn: ensure socket is owned by ovpn before deref sk_user_data\n\nSome subsystems, like BPF SOCKMAP, set sk_user_data without\nactually setting the encap_type.\n\nFor this reason, we must make sure that the type is the\none ovpn expects before dereferencing sk_user_data.\n\nFailing to do so may lead to out-of-bounds reads.","published":"2026-09-03T08:21:51.344Z","modified":"2026-09-05T03:48:19.851339635Z","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.18.45"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/43a31142e1d22b3cf5490bd94a94db7196901734"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59aed1eb60d70678a53acccb0cb337a26ce6680e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/61fb3cca40ff938671474f4a16adb908c19032d7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80735.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80735"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-05T03:48:19.851339635Z"}}