{"id":"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.","modified":"2026-09-05T03:48:19.851339635Z","published":"2026-09-03T08:21:51.344Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80735.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f6226ae7a0cd47aaa9175aca6a1e19600f884cbf"},{"fixed":"61fb3cca40ff938671474f4a16adb908c19032d7"},{"fixed":"43a31142e1d22b3cf5490bd94a94db7196901734"},{"fixed":"59aed1eb60d70678a53acccb0cb337a26ce6680e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80735.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80735.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"}]}