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CVE-2026-128886 Dbus: server accept watch can be stalled by blocking nonce-tcp accept_with_noncefile path

6.2 medium

Medium (6.2) in red hat red hat enterprise linux 10.

On this page
A flaw was found in dbus when configured with the nonce-tcp transport. An unauthenticated attacker able to connect to an exposed listener can cause a Denial of Service (DoS) by opening a connection and withholding the expected authentication token. Because the server processes this verification without enforcing a timeout, the stalled connection blocks the accept process and prevents legitimate clients from establishing new connections.

Severity

CVSS 3.1

6.2 medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-1322 Use of Blocking Code in Single-threaded, Non-blocking Context
Published
Modified
Assigned by
redhat (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • red hat:red hat enterprise linux 10

Attack patterns (CAPEC)

  • CAPEC-25 Forced Deadlock Likelihood: Low · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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