The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.
                
            Metrics
Affected Vendors & Products
Advisories
    | Source | ID | Title | 
|---|---|---|
|  Debian DLA | DLA-3160-1 | tomcat9 security update | 
|  Debian DSA | DSA-5265-1 | tomcat9 security update | 
|  EUVD | EUVD-2022-6865 | The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client. | 
|  Github GHSA | GHSA-jx7c-7mj5-9438 | Apache Tomcat Race Condition vulnerability | 
Fixes
    Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
        History
                    Wed, 21 May 2025 15:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | ssvc 
 | 
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: apache
Published:
Updated: 2025-05-21T15:00:10.097Z
Reserved: 2021-11-17T00:00:00.000Z
Link: CVE-2021-43980
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-04T04:10:16.914Z
 NVD
                        NVD
                    Status : Modified
Published: 2022-09-28T14:15:09.880
Modified: 2025-05-21T15:15:55.223
Link: CVE-2021-43980
 Redhat
                        Redhat
                     OpenCVE Enrichment
                        OpenCVE Enrichment
                    No data.