CVE-2026-74281High· 7.5▾ TwilightIn 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 bound…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.7%
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 from the wire, without checking that lower <= upper. The local bind path validates the ordering (tipc_uaddr_valid()), but the name-distribution path does not.
A binding with lower > upper is inserted at the far end of the service-range rbtree (keyed on lower) where no lookup or withdrawal can ever match it (service_range_foreach_match() requires sr->lower <= end). The publication, its service_range node and the augmented rbtree entry are then leaked for the lifetime of the namespace, and there is no per-peer cap equivalent to TIPC_MAX_PUBL on locally created bindings.
Reject inverted ranges in the network path as well. A peer node can otherwise leak unbounded binding-table memory by sending PUBLICATION items with lower > upper.
Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < cd1955f81bd8ebeef51b324989ac871ad1947fb6Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < f683200b83a0085d4e11abea8c1fdd9fdfb95b0bLinux >= 37922ea4a3105176357c8d565a9d982c4a08714a < f1715d92ee3095d9215b493a8603a81f646fcf61Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < 581ef56e5c34d475056ce086dc2ba0e872ba6857Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < 7e401233f9bb74a626e70698d0d62f3a94ac0676Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < 973bf0ed896b9898668dbadb82ed849d7d573010Linux >= 37922ea4a3105176357c8d565a9d982c4a08714a < 2afb648f7b99216c687db1f89739c995e1144153Linux 4.17Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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