---
id: CVE-2026-68313
title: 'tipc: fix infinite loop in __tipc_nl_compat_dumpit'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  tipc: fix infinite loop in __tipc_nl_compat_dumpit

  cmd->dumpit callback can return a negative errno, causing an infinite
  loop due to the while(len) condition. As the l…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    2a1c1397275f27e33b6a2a565d81cfef0deb6656
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    98d09766cee3182aae292886e2fef0cbe8dba537
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    f9c669d9f4cac832fe31193cdbc24c6a9d99398b
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    1ab78af2140189b735b8d3b889b0284128cb2013
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48
  - >-
    Linux >= d0796d1ef63deb38147729664691ba3090930b26 <
    22f8aa35964e8f2ab026578f45befc9605fd1b28
  - Linux 4.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:47:04.642186Z'
published: '2026-08-10'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:55:12.855Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-68313'
references:
  - url: 'https://git.kernel.org/stable/c/2a1c1397275f27e33b6a2a565d81cfef0deb6656'
  - url: 'https://git.kernel.org/stable/c/98d09766cee3182aae292886e2fef0cbe8dba537'
  - url: 'https://git.kernel.org/stable/c/9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4'
  - url: 'https://git.kernel.org/stable/c/f9c669d9f4cac832fe31193cdbc24c6a9d99398b'
  - url: 'https://git.kernel.org/stable/c/1ab78af2140189b735b8d3b889b0284128cb2013'
  - url: 'https://git.kernel.org/stable/c/e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef'
  - url: 'https://git.kernel.org/stable/c/b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48'
  - url: 'https://git.kernel.org/stable/c/22f8aa35964e8f2ab026578f45befc9605fd1b28'
tags:
  - cve.org
epss: 0.00216
epssPercentile: 0.12162
ingestedAt: '2026-11-06T18:00:12.613Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

tipc: fix infinite loop in __tipc_nl_compat_dumpit

cmd->dumpit callback can return a negative errno, causing an infinite
loop due to the while(len) condition. As the loop never terminates,
genl_mutex is never released, and other tasks waiting on it starve in D
state.

Check dumpit's return value, propagate it and jump to err_out on error.

## Affected

- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < 2a1c1397275f27e33b6a2a565d81cfef0deb6656`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < 98d09766cee3182aae292886e2fef0cbe8dba537`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < 9cd8c88e1336ec0fbe02af1ddf2b52838d30fae4`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < f9c669d9f4cac832fe31193cdbc24c6a9d99398b`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < 1ab78af2140189b735b8d3b889b0284128cb2013`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < e740e90ca8e7f70d9eac1aa31a8b3e0e4d32b2ef`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < b8f3b8efa5f99081b14de1a7ffa68a81bf01bd48`
- `Linux >= d0796d1ef63deb38147729664691ba3090930b26 < 22f8aa35964e8f2ab026578f45befc9605fd1b28`
- `Linux 4.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.