{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"important"},"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-2026-55831","title":"Title"},{"category":"description","text":"Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty's SPDY SETTINGS decoder accepts a peer-declared SETTINGS entry count up to the 24-bit frame-length limit and materializes every unique setting ID in `DefaultSpdySettingsFrame`, allowing a remote SPDY/3.1 peer to send a syntactically valid roughly 2 MiB SETTINGS frame that creates 262144 map entries and amplifies network input into heap growth and ordered-map insertion work. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.","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-2026-55831","url":"https://www.suse.com/security/cve/CVE-2026-55831"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1271960 for CVE-2026-55831","url":"https://bugzilla.suse.com/1271960"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:3482-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2026-August/028141.html"}],"title":"SUSE CVE 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Prior to 4.1.136.Final and 4.2.16.Final, Netty's SPDY SETTINGS decoder accepts a peer-declared SETTINGS entry count up to the 24-bit frame-length limit and materializes every unique setting ID in `DefaultSpdySettingsFrame`, allowing a remote SPDY/3.1 peer to send a syntactically valid roughly 2 MiB SETTINGS frame that creates 262144 map entries and amplifies network input into heap growth and ordered-map insertion work. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE Linux Enterprise Desktop 15 SP7:netty-tcnative","SUSE Linux Enterprise Desktop 15 SP7:netty3","SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS:netty3","SUSE Linux Enterprise High Performance Computing 15 SP7:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP7:netty3","SUSE Linux Enterprise Module for Development Tools 15 SP7:netty-tcnative","SUSE Linux Enterprise Module for Development Tools 15 SP7:netty3","SUSE Linux Enterprise Server 15 SP2-LTSS:netty-tcnative","SUSE Linux Enterprise Server 15 SP2-LTSS:netty3","SUSE Linux Enterprise Server 15 SP2:netty-tcnative","SUSE Linux Enterprise Server 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