CVE-2025-8671

High

Description

A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.

SeverityHigh
CVSS7.5
Exploit probability—
ProductEnterprise Module for Development Tools
PublishedAug 13, 2025
First seenAug 13, 2025
Weakness typeCWE-404CWE-404

How to fix

Update
  • SUSE Linux Enterprise Module for Development Tools15-SP5 or later
  • SUSE Linux Enterprise High Performance Computing (HPC)15 SP5 or later
  • SUSE Linux Enterprise Desktop15 SP7 or later
  • SUSE Linux Enterprise High Performance Computing15 SP7 or later
  • SUSE Linux Enterprise Module for Dev Tools15 SP7 or later
  • SUSE Linux Enterprise Module for Package Hub15 SP7 or later
  • SUSE Linux Enterprise Server15 SP7 or later
  • SUSE Linux Enterprise Server for SAP Applications15 SP7 or later

Affected products

ProductAffected versionsFixed in
SUSE Linux Enterprise Module for Development Tools15 SP2 ≤ v < 15-SP515-SP5
SUSE Linux Enterprise High Performance Computing (HPC)15 ≤ v < 15 SP515 SP5
Varnish Software Varnish Enterprise6.0.x ≤ v ≤ 6.0.14r4—
Varnish Software Varnish Cache6.0LTS ≤ v ≤ 6.014, 5.x ≤ v ≤ 7.71—
Fastly H20579ecfa—
Wind River LinuxLTS22 ≤ v ≤ TLS25—
SUSE Linux Enterprise Desktop15 SP6 ≤ v < 15 SP715 SP7
SUSE Linux Enterprise High Performance Computing15 SP3 ≤ v < 15 SP715 SP7
SUSE Linux Enterprise Module for Dev Tools15 SP3 ≤ v < 15 SP715 SP7
SUSE Linux Enterprise Module for Package Hub15 SP5 ≤ v < 15 SP715 SP7
SUSE Linux Enterprise Server12 SP5 ≤ v < 15 SP715 SP7
SUSE Linux Enterprise Server for SAP Applications15 SP6 ≤ v < 15 SP715 SP7
SUSE Linux SUSE Manager Server4.3—
SUSE Linux SUSE Manager Server LTS4.3—
SUSE Linux SUSE Manager Proxy4.3—
SUSE Linux SUSE Manager Retail Branch Server4.3—
SUSE Linux openSUSE Leap15.6—

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