{"id":"CVE-2026-99116","aliases":[],"title":"net: psp: do not inherit the Rx association on clone","titleSource":"Linux","descriptionSource":"Linux","products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"6b46ca260e2290e3453d1355ab5b6d283d73d780","status":"affected","lessThan":"a9f14ea73e82db743f0acf4219f499d594589288","versionType":"git"},{"version":"6b46ca260e2290e3453d1355ab5b6d283d73d780","status":"affected","lessThan":"c962695467d3ab9738a6508279827ec33a7d2bdf","versionType":"git"},{"version":"6b46ca260e2290e3453d1355ab5b6d283d73d780","status":"affected","lessThan":"1d2929d0850fff683b8aff051275945e65f082c8","versionType":"git"}],"defaultStatus":"unaffected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99116"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"6.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.18","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99116"}],"remediation":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: psp: do not inherit the Rx association on clone\n\nsk->psp_assoc sits past sk_dontcopy_end, so sock_copy() copies it into\nevery socket accepted from a listener without taking a reference, while\ninet_sock_destruct() puts for every inet socket. psp_twsk_init() does\nrefcount_inc() for the timewait socket, so a child closing through\nTIME_WAIT cancels its own put and leaves the association with one\nreference and N timewait sockets holding the same pointer. Closing the\nlistener frees it, and the timewait timers then put freed memory.\n\nRejecting the association on a listening socket is not sufficient: a socket\ncan acquire one while established and then be turned back into a listener,\nbecause tcp_disconnect() leaves sk->psp_assoc in place.\n\n  BUG: KASAN: slab-use-after-free in psp_twsk_assoc_free+0x6f/0xf0\n  Write of size 4 at addr ffff888110f9255c by task swapper/7/0\n   psp_twsk_assoc_free+0x6f/0xf0\n   inet_twsk_put+0xda/0x1b0\n   call_timer_fn+0x53/0x2e0\n   __run_timers+0x764/0xa80\n  Freed by task 99:\n   kfree+0x1a7/0x500\n   process_one_work+0x7ec/0x1100\n\nAn association carries a per-connection SPI and key, so a child must not\ninherit the parent's. Clear it on clone.","severity":"unknown","score":null,"published":"2026-10-28T10:34:33.109Z","modified":"2026-10-28T10:34:33.109Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://git.kernel.org/stable/c/a9f14ea73e82db743f0acf4219f499d594589288","https://git.kernel.org/stable/c/c962695467d3ab9738a6508279827ec33a7d2bdf","https://git.kernel.org/stable/c/1d2929d0850fff683b8aff051275945e65f082c8"],"sources":[{"name":"CVE","id":"CVE-2026-99116","modified":"2026-10-28T10:34:33.109Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99116"}],"assessments":[],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-29T04:15:31.644Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}