CVE-2026-74281
tipc: reject inverted service ranges from peer bindings
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.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Apply relevant security patches.
- Validate service range bounds rigorously.
- Reject inverted ranges in network paths.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74281.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74281 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74281
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74281 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74281 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'cd1955f81bd8ebeef51b324989ac871ad1947fb6', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f683200b83a0085d4e11abea8c1fdd9fdfb95b0b', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f1715d92ee3095d9215b493a8603a81f646fcf61', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '581ef56e5c34d475056ce086dc2ba0e872ba6857', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '7e401233f9bb74a626e70698d0d62f3a94ac0676', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '973bf0ed896b9898668dbadb82ed849d7d573010', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '2afb648f7b99216c687db1f89739c995e1144153', 'versionType': 'git'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'cd1955f81bd8ebeef51b324989ac871ad1947fb6', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f683200b83a0085d4e11abea8c1fdd9fdfb95b0b', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f1715d92ee3095d9215b493a8603a81f646fcf61', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '581ef56e5c34d475056ce086dc2ba0e872ba6857', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '7e401233f9bb74a626e70698d0d62f3a94ac0676', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '973bf0ed896b9898668dbadb82ed849d7d573010', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '2afb648f7b99216c687db1f89739c995e1144153', 'versionType': 'git'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'cd1955f81bd8ebeef51b324989ac871ad1947fb6', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f683200b83a0085d4e11abea8c1fdd9fdfb95b0b', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': 'f1715d92ee3095d9215b493a8603a81f646fcf61', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '581ef56e5c34d475056ce086dc2ba0e872ba6857', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '7e401233f9bb74a626e70698d0d62f3a94ac0676', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '973bf0ed896b9898668dbadb82ed849d7d573010', 'versionType': 'git'}, {'status': 'affected', 'version': '37922ea4a3105176357c8d565a9d982c4a08714a', 'lessThan': '2afb648f7b99216c687db1f89739c995e1144153', 'versionType': 'git'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.17'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.17', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/tipc/name_distr.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/2afb648f7b99216c687db1f89739c995e1144153 Added Reference https://git.kernel.org/stable/c/581ef56e5c34d475056ce086dc2ba0e872ba6857 Added Reference https://git.kernel.org/stable/c/7e401233f9bb74a626e70698d0d62f3a94ac0676 Added Reference https://git.kernel.org/stable/c/973bf0ed896b9898668dbadb82ed849d7d573010 Added Reference https://git.kernel.org/stable/c/cd1955f81bd8ebeef51b324989ac871ad1947fb6 Added Reference https://git.kernel.org/stable/c/f1715d92ee3095d9215b493a8603a81f646fcf61 Added Reference https://git.kernel.org/stable/c/f683200b83a0085d4e11abea8c1fdd9fdfb95b0b