Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| SUSE Linux / Enterprise Module for Development Tools | affected 15 SP2 before 15-SP5 |
| SUSE Linux / Enterprise High Performance Computing (HPC) | affected 15 before 15 SP5 |
| Varnish Software / Varnish Enterprise | affected 6.0.x through 6.0.14r4 |
| Varnish Software / Varnish Cache | affected 6.0LTS through 6.014 |
| Varnish Software / Varnish Cache | affected 5.x through 7.71 |
| Fastly / H20 | affected 579ecfa |
| Wind River / Linux | affected LTS22 through TLS25 |
| SUSE Linux / Enterprise Desktop | affected 15 SP6 before 15 SP7 |
| SUSE Linux / Enterprise High Performance Computing | affected 15 SP3 before 15 SP7 |
| SUSE Linux / Enterprise Module for Dev Tools | affected 15 SP3 before 15 SP7 |
| SUSE Linux / Enterprise Module for Package Hub | affected 15 SP5 before 15 SP7 |
| SUSE Linux / Enterprise Server | affected 12 SP5 before 15 SP7 |
| SUSE Linux / Enterprise Server for SAP Applications | affected 15 SP6 before 15 SP7 |
| SUSE Linux / SUSE Manager Server | affected 4.3 |
| SUSE Linux / SUSE Manager Server LTS | affected 4.3 |
| SUSE Linux / SUSE Manager Proxy | affected 4.3 |
| SUSE Linux / SUSE Manager Retail Branch Server | affected 4.3 |
| SUSE Linux / openSUSE Leap | affected 15.6 |
CWE
No CWE identifiers supplied.
References
- https://galbarnahum.com/made-you-reset
- https://kb.cert.org/vuls/id/767506
- https://varnish-cache.org/security/VSV00017.html
- https://www.fastlystatus.com/incident/377810
- https://github.com/h2o/h2o/commit/4729b661e3c6654198d2cc62997e1af58bef4b80
- https://support2.windriver.com/index.php?page=security-notices
- https://www.suse.com/support/kb/doc/?id=000021980
- https://gitlab.isc.org/isc-projects/bind9/-/issues/5325
- https://github.com/h2o/h2o/security/advisories/GHSA-mrjm-qq9m-9mjq
ADP enrichment
No English description supplied.
No English description supplied.
- https://github.com/envoyproxy/envoy/issues/40739
- https://github.com/varnish/hitch/issues/397
- https://github.com/Kong/kong/discussions/14731
- https://deepness-lab.org/publications/madeyoureset/
- https://www.imperva.com/blog/madeyoureset-turning-http-2-server-against-itself/
- https://www.kb.cert.org/vuls/id/767506
- http://www.openwall.com/lists/oss-security/2025/09/18/1
- http://www.openwall.com/lists/oss-security/2025/08/13/6