{"id":"CVE-2026-89046","title":"zstd-jni: zstd-jni: Information disclosure or denial of service via out-of-bounds read (CVE-2026-89046)","summary":"A flaw was found in zstd-jni. This out-of-bounds read vulnerability in the Zstd.getFrameContentSize function occurs because it fails to validate negative srcPosition arguments. A remote attacker can supply negative offset values, bypassing…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cvssSource":"vendor","cwe":"CWE-125","vendor":"Red Hat","product":"Red Hat Ceph Storage 9","affected":["exploit_intelligence","openshift_developer_tools_and_services","build_of_apache_camel_4_for_quarkus 3","build_of_apache_camel_for_spring_boot 4","build_of_apicurio_registry 3","build_of_debezium 3","ceph_storage 9","enterprise_linux 8","enterprise_linux 9","jboss_enterprise_application_platform 8","jboss_enterprise_application_platform_expansion_pack","openshift_ai_rhoai"],"published":"2026-09-10","updated":"2026-09-21","sourceUpdated":"2026-09-21T16:36:55+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89046.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89046.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89046"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531577"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89046"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89046"},{"url":"https://github.com/luben/zstd-jni"},{"url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/java/com/github/luben/zstd/Zstd.java#L730"},{"url":"https://github.com/luben/zstd-jni/blob/v1.5.7-13/src/main/native/jni_zstd.c#L87"},{"url":"https://github.com/luben/zstd-jni/commit/dd08685ef913a32e76fb27f43470035c06758646"},{"url":"https://github.com/luben/zstd-jni/releases/tag/v1.5.7-14"},{"url":"https://github.com/luben/zstd-jni/security/advisories/GHSA-rm53-6wf5-f34m"},{"url":"https://www.vulncheck.com/advisories/zstd-jni-1.5.5-6-through-1.5.7-13-out-of-bounds-read-via-negative-offset"}],"tags":["csaf","vex","red-hat","cve.org","exploit-available"],"epss":0.00571,"epssPercentile":0.45749,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-10T18:07:52.440977Z"},"ingestedAt":"2026-09-11T16:45:48.028Z","slug":"CVE-2026-89046","body":"## Overview\n\nA flaw was found in zstd-jni. This out-of-bounds read vulnerability in the Zstd.getFrameContentSize function occurs because it fails to validate negative srcPosition arguments. A remote attacker can supply negative offset values, bypassing bounds checks and accessing the native frame-header parser. This can lead to out-of-bounds memory reads, resulting in information disclosure or a Java Virtual Machine (JVM) crash.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Exploit Intelligence, OpenShift Developer Tools and Services, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Apache Camel for Spring Boot 4, Red Hat build of Apicurio Registry 3, Red Hat build of Debezium 3, … · no fix planned: Red Hat Ceph Storage 9, Exploit Intelligence, OpenShift Developer Tools and Services, Red Hat build of Apache Camel 4 for Quarkus 3, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89046.json)\n\n**zstd-jni: zstd-jni: Information disclosure or denial of service via out-of-bounds read** — rated Important by Red Hat. Released 2026-09-10, updated 2026-09-21.\n\nAffected:\n\n- Exploit Intelligence\n- OpenShift Developer Tools and Services\n- Red Hat build of Apache Camel 4 for Quarkus 3\n- Red Hat build of Apache Camel for Spring Boot 4\n- Red Hat build of Apicurio Registry 3\n- Red Hat build of Debezium 3\n- Red Hat Ceph Storage 9\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat JBoss Enterprise Application Platform 8\n- Red Hat JBoss Enterprise Application Platform Expansion Pack\n- Red Hat OpenShift AI (RHOAI)\n\nNo fix planned:\n\n- Red Hat Ceph Storage 9\n- Exploit Intelligence\n- OpenShift Developer Tools and Services\n- Red Hat build of Apache Camel 4 for Quarkus 3\n- Red Hat build of Apache Camel for Spring Boot 4\n- Red Hat build of Apicurio Registry 3\n- Red Hat build of Debezium 3\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat JBoss Enterprise Application Platform 8\n- Red Hat JBoss Enterprise Application Platform Expansion Pack\n- Red Hat OpenShift AI (RHOAI)\n\nNot affected:\n\n- Red Hat Fuse 7\n- Red Hat Hardened Images\n- Red Hat OpenShift AI (RHOAI)\n\n## Remediation\n\nFix deferred\n\nWorkarounds / mitigations:\n\n- Update to a product release containing zstd-jni 1.5.7-14 or later. Until updated, validate source positions and reject negative offsets before calling Zstd.getFrameContentSize. Do not pass attacker-controlled offsets to this method without validation.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}