{"id":"CVE-2026-74281","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-74281","generatedAt":"2026-10-28T02:18:44.478Z","title":"In the Linux kernel, the following vulnerability has been resolved: tipc: reject inverted service ranges from peer bindings tipc_update_nametbl() inserts a binding advertised by a peer node using the lower and upper service-range bounds taken directly…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: reject inverted service ranges from peer bindings\n\ntipc_update_nametbl() inserts a binding advertised by a peer node using\nthe lower and upper service-range bounds taken directly from the wire,\nwithout checking that lower <= upper. The local bind path validates the\nordering (tipc_uaddr_valid()), but the name-distribution path does not.\n\nA binding with lower > upper is inserted at the far end of the\nservice-range rbtree (keyed on lower) where no lookup or withdrawal can\never match it (service_range_foreach_match() requires sr->lower <= end).\nThe publication, its service_range node and the augmented rbtree entry\nare then leaked for the lifetime of the namespace, and there is no\nper-peer cap equivalent to TIPC_MAX_PUBL on locally created bindings.\n\nReject inverted ranges in the network path as well. A peer node can\notherwise leak unbounded binding-table memory by sending PUBLICATION\nitems with lower > upper.","published":"2026-08-15T06:22:28.000Z","lastModified":"2026-10-16T19:17:36.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":[],"affected":[],"epss":{"score":0.0068,"percentile":0.52127,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f1715d92ee3095d9215b493a8603a81f646fcf61","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74281","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}