CVE-2026-68313
Description
A flaw was found in the Linux kernel's Transparent Inter-Process Communication (TIPC) module. A vulnerability in the __tipc_nl_compat_dumpit function can lead to an infinite loop if a callback returns a negative error code. This prevents the release of a critical system lock, causing other processes to become unresponsive and resulting in a Denial of Service (DoS) condition.
Statement
This vulnerability is rated as having a Low impact because the Transparent Inter-Process Communication (TIPC) kernel module is not loaded by default in standard Red Hat Enterprise Linux installations. An attacker requires local access on a system where TIPC has been explicitly enabled to trigger the loop condition and induce a denial of service. Consequently, typical environments that do not configure or utilize TIPC networking remain unaffected.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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