tipc: reject inverted service ranges from peer bindings

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74281
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:27 UTC
Updated2026-08-17 06:19:21 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.006700000 probability, percentile 0.489820000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a cd1955f81bd8ebeef51b324989ac871ad1947fb6 git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a f683200b83a0085d4e11abea8c1fdd9fdfb95b0b git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a f1715d92ee3095d9215b493a8603a81f646fcf61 git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a 581ef56e5c34d475056ce086dc2ba0e872ba6857 git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a 7e401233f9bb74a626e70698d0d62f3a94ac0676 git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a 973bf0ed896b9898668dbadb82ed849d7d573010 git Not specified
CNA Linux Linux affected 37922ea4a3105176357c8d565a9d982c4a08714a 2afb648f7b99216c687db1f89739c995e1144153 git Not specified
CNA Linux Linux affected 4.17 Not specified
CNA Linux Linux unaffected 4.17 semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f1715d92ee3095d9215b493a8603a81f646fcf61 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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