CVE-2026-74281
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.66% probability · 50th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153
- https://git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857
- https://git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676
- https://git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010
- https://git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6
- https://git.kernel.org/stable/c/f1715d92ee3095d9215b493a8603a81f646fcf61
- https://git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.