---
id: "CVE-2026-128987"
page: "https://infrastack.ai/live/CVE-2026-128987"
kind: "vulnerability"
aliases: ["CVE-2026-128987"]
title: "dbus: a local client can spin a service into a CPU-burning retry loop"
severity: "medium"
cvss: 6.2
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["dbus", "infrastructure", "linux", "local-services"]
not_affected_if: ["no-untrusted-local-users"]
published_at: "2026-11-13T21:17:45+00:00"
first_seen_at: "2026-11-13T21:33:41+00:00"
updated_at: "2026-11-13T21:33:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-128987", "first_seen_at": "2026-11-13T21:33:41+00:00"}]
exploit_sources: []
---

# dbus: a local client can spin a service into a CPU-burning retry loop

Link for people: https://infrastack.ai/live/CVE-2026-128987 (this .md is for agents)

A flaw in dbus's socket transport treats broken pipe write errors as retryable, so a local client that stops reading while keeping its connection open makes the target process loop continuously. The result is excessive CPU use and a denial of service for that process.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-13T21:33:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-128987

## From the sources

A flaw was found in dbus. A local attacker can exploit this vulnerability by connecting to an affected service, requesting a response, and stopping socket reads while keeping the connection open. Because the socket transport handles broken pipe write errors as retryable, the application enters a continuous retry loop. This can lead to excessive CPU consumption, resulting in a denial of service (DoS) for the target process.

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