{"id":"CVE-2026-99116","revision":null,"records":[{"revision":"4394e4ea145e465bb68f9dafb203148b","observedAt":"2026-10-31T13:33:50.447+00:00","statement":{"source":"cve-program","id":"CVE-2026-99116","aliases":[],"title":"net: psp: do not inherit the Rx association on clone","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.","state":0,"publishedAt":"2026-10-28T10:34:33.109+00:00","modifiedAt":"2026-10-31T12:43:13.361+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6b46ca260e2290e3453d1355ab5b6d283d73d780\",\n                            \"lessThan\": \"a9f14ea73e82db743f0acf4219f499d594589288\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6b46ca260e2290e3453d1355ab5b6d283d73d780\",\n                            \"lessThan\": \"c962695467d3ab9738a6508279827ec33a7d2bdf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6b46ca260e2290e3453d1355ab5b6d283d73d780\",\n                            \"lessThan\": \"1d2929d0850fff683b8aff051275945e65f082c8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/core/sock.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.59\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.13\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/a9f14ea73e82db743f0acf4219f499d594589288","https://git.kernel.org/stable/c/c962695467d3ab9738a6508279827ec33a7d2bdf","https://git.kernel.org/stable/c/1d2929d0850fff683b8aff051275945e65f082c8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99116","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99116","identifiers":["CVE-2026-99116"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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