{"id":"CVE-2023-53559","summary":"ip_vti: fix potential slab-use-after-free in decode_session6","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nip_vti: fix potential slab-use-after-free in decode_session6\n\nWhen ip_vti device is set to the qdisc of the sfb type, the cb field\nof the sent skb may be modified during enqueuing. Then,\nslab-use-after-free may occur when ip_vti device sends IPv6 packets.\nAs commit f855691975bb (\"xfrm6: Fix the nexthdr offset in\n_decode_session6.\") showed, xfrm_decode_session was originally intended\nonly for the receive path. IP6CB(skb)-\u003enhoff is not set during\ntransmission. Therefore, set the cb field in the skb to 0 before\nsending packets.","modified":"2026-03-20T12:33:13.708615Z","published":"2025-10-04T15:17:03.497Z","related":["SUSE-SU-2025:21040-1","SUSE-SU-2025:21052-1","SUSE-SU-2025:21056-1","SUSE-SU-2025:21064-1","SUSE-SU-2025:4057-1","SUSE-SU-2025:4111-1","SUSE-SU-2025:4128-1","SUSE-SU-2025:4132-1","SUSE-SU-2025:4135-1","SUSE-SU-2025:4139-1","SUSE-SU-2025:4140-1","SUSE-SU-2025:4141-1","SUSE-SU-2025:4149-1","SUSE-SU-2025:4188-1","SUSE-SU-2025:4189-1","SUSE-SU-2025:4301-1","SUSE-SU-2025:4320-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53559.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0b4d69539fdea138af2befe08893850c89248068"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2b05bf5dc437f7891dd409a3eaf5058459391c7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6018a266279b1a75143c7c0804dd08a5fc4c3e0b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/78e397a43e1c47321a4679cc49a6c4530bf820b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7dfe23659f3677c08a60a0056cda2d91a79c15ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/82fb41c5de243e7dfa90f32ca58e35adaff56c1d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d34c30442d5e53a33cde79ca163320dbe2432cbd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e1e04cc2ef2c0c0866c19f5627149a76c2baae32"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53559.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53559"},{"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":"f855691975bb06373a98711e4cfe2c224244b536"},{"fixed":"82fb41c5de243e7dfa90f32ca58e35adaff56c1d"},{"fixed":"7dfe23659f3677c08a60a0056cda2d91a79c15ca"},{"fixed":"d34c30442d5e53a33cde79ca163320dbe2432cbd"},{"fixed":"0b4d69539fdea138af2befe08893850c89248068"},{"fixed":"e1e04cc2ef2c0c0866c19f5627149a76c2baae32"},{"fixed":"2b05bf5dc437f7891dd409a3eaf5058459391c7a"},{"fixed":"78e397a43e1c47321a4679cc49a6c4530bf820b9"},{"fixed":"6018a266279b1a75143c7c0804dd08a5fc4c3e0b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53559.json"}}],"schema_version":"1.7.5"}