{"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-2026-45416","title":"Title"},{"category":"description","text":"Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode() reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates `ctx.alloc().buffer(handshakeLength)` (line 161). The guard at line 140 is `handshakeLength > maxClientHelloLength && maxClientHelloLength != 0`, and the commonly-used SniHandler/AbstractSniHandler constructors (SniHandler(Mapping), SniHandler(AsyncMapping), AbstractSniHandler()) pass maxClientHelloLength=0 and handshakeTimeoutMillis=0, so the length guard is disabled and no timeout is scheduled. A 16 MiB request exceeds the default pooled chunk size and becomes a huge/unpooled allocation performed immediately. The buffer is retained in the handler until the channel closes. Versions 4.1.135.Final and 4.2.15.Final patch the issue.","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-2026-45416","url":"https://www.suse.com/security/cve/CVE-2026-45416"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1268246 for CVE-2026-45416","url":"https://bugzilla.suse.com/1268246"},{"category":"external","summary":"Advisory link for SUSE-SU-2026:2802-1","url":"https://lists.suse.com/pipermail/sle-updates/2026-July/048051.html"}],"title":"SUSE CVE CVE-2026-45416","tracking":{"current_release_date":"2026-09-03T00:09:19Z","generator":{"date":"2026-06-16T02:20:42Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2026-45416","initial_release_date":"2026-06-16T02:20:42Z","revision_history":[{"date":"2026-06-16T02:20:42Z","number":"2","summary":"vulnerabilities added,references added,severity changed from  to important"},{"date":"2026-07-01T03:23:39Z","number":"3","summary":"updates entered QA"},{"date":"2026-07-09T02:57:16Z","number":"4","summary":"more updates released"},{"date":"2026-07-10T03:14:51Z","number":"5","summary":"references added"},{"date":"2026-09-03T00:09:19Z","number":"6","summary":"more updates marked as not affected"}],"status":"interim","version":"6"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise Desktop 15 SP7","product":{"name":"SUSE Linux Enterprise Desktop 15 SP7","product_id":"SUSE Linux Enterprise Desktop 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Prior to versions 4.1.135.Final and 4.2.15.Final, SslClientHelloHandler.decode() reads the 24-bit TLS handshake length and, when the ClientHello does not fit in the first record, eagerly allocates `ctx.alloc().buffer(handshakeLength)` (line 161). The guard at line 140 is `handshakeLength > maxClientHelloLength && maxClientHelloLength != 0`, and the commonly-used SniHandler/AbstractSniHandler constructors (SniHandler(Mapping), SniHandler(AsyncMapping), AbstractSniHandler()) pass maxClientHelloLength=0 and handshakeTimeoutMillis=0, so the length guard is disabled and no timeout is scheduled. A 16 MiB request exceeds the default pooled chunk size and becomes a huge/unpooled allocation performed immediately. The buffer is retained in the handler until the channel closes. Versions 4.1.135.Final and 4.2.15.Final patch the issue.","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 SP2:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP2:netty3","SUSE Linux Enterprise High Performance Computing 15 SP3:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP3: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 SP4:netty-tcnative","SUSE Linux Enterprise High Performance Computing 15 SP4: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 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