CVE-2026-128987

Dbus: infinite cpu-spin loop in libdbus socket transport when epipe is received during write operations

Published Nov 13, 2026 CVSS 3.1 · 6.2 Medium EPSS n/a KEV · Not listed
Description
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.

Analysis

No analysis available yet

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Description 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.
Title Dbus: infinite cpu-spin loop in libdbus socket transport when epipe is received during write operations
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-835
CPEs cpe:/a:redhat:enterprise_linux:10
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses
  • CWE-835

    Loop with Unreachable Exit Condition ('Infinite Loop')

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 13, 2026, 9:06 PM
Reserved
Nov 13, 2026, 2:11 PM
Status
Awaiting Analysis
Published
Nov 13, 2026, 9:17 PM
Modified
Nov 13, 2026, 9:17 PM