{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2025-62409","title":"Title"},{"category":"description","text":"Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 & 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2025-62409","url":"https://www.suse.com/security/cve/CVE-2025-62409"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"}],"title":"SUSE CVE CVE-2025-62409","tracking":{"current_release_date":"2025-10-22T23:23:30Z","generator":{"date":"2025-10-22T23:23:30Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2025-62409","initial_release_date":"2025-10-22T23:23:30Z","revision_history":[{"date":"2025-10-22T23:23:30Z","number":"2","summary":"Current version"}],"status":"interim","version":"2"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"istioctl-1.27.3-1.1","product":{"name":"istioctl-1.27.3-1.1","product_id":"istioctl-1.27.3-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/istioctl@1.27.3-1.1"}}},{"category":"product_version","name":"istioctl-bash-completion-1.27.3-1.1","product":{"name":"istioctl-bash-completion-1.27.3-1.1","product_id":"istioctl-bash-completion-1.27.3-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/istioctl-bash-completion@1.27.3-1.1"}}},{"category":"product_version","name":"istioctl-zsh-completion-1.27.3-1.1","product":{"name":"istioctl-zsh-completion-1.27.3-1.1","product_id":"istioctl-zsh-completion-1.27.3-1.1","product_identification_helper":{"purl":"pkg:rpm/suse/istioctl-zsh-completion@1.27.3-1.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"istioctl-1.27.3-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:istioctl-1.27.3-1.1"},"product_reference":"istioctl-1.27.3-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"istioctl-bash-completion-1.27.3-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:istioctl-bash-completion-1.27.3-1.1"},"product_reference":"istioctl-bash-completion-1.27.3-1.1","relates_to_product_reference":"openSUSE Tumbleweed"},{"category":"default_component_of","full_product_name":{"name":"istioctl-zsh-completion-1.27.3-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:istioctl-zsh-completion-1.27.3-1.1"},"product_reference":"istioctl-zsh-completion-1.27.3-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2025-62409","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2025-62409"}],"notes":[{"category":"general","text":"Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 & 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.","title":"CVE description"}],"product_status":{"recommended":["openSUSE Tumbleweed:istioctl-1.27.3-1.1","openSUSE Tumbleweed:istioctl-bash-completion-1.27.3-1.1","openSUSE Tumbleweed:istioctl-zsh-completion-1.27.3-1.1"]},"references":[{"category":"external","summary":"CVE-2025-62409","url":"https://www.suse.com/security/cve/CVE-2025-62409"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["openSUSE Tumbleweed:istioctl-1.27.3-1.1","openSUSE Tumbleweed:istioctl-bash-completion-1.27.3-1.1","openSUSE Tumbleweed:istioctl-zsh-completion-1.27.3-1.1"]}],"threats":[{"category":"impact","date":"2025-10-16T20:02:57Z","details":"moderate"}],"title":"CVE-2025-62409"}]}