{"id":"CVE-2026-89528","title":"kernel: svcrdma: Reject Read lists that exceed the page budget (CVE-2026-89528)","summary":"A flaw was found in the Linux kernel's svcrdma component. A remote attacker could send specially crafted Read lists that exceed the page budget. This can lead to a NULL pointer dereference during Direct Memory Access (DMA) mapping, potenti…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-476","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-18","sourceUpdated":"2026-09-18T13:44:03+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89528.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89528.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89528"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532188"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89528"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89528"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89528.mbox"},{"url":"https://git.kernel.org/stable/c/0ca487abb3bdf581851664b5db21f364caf57682"},{"url":"https://git.kernel.org/stable/c/1a3af2262cb384112ef38632de4690682be528b4"},{"url":"https://git.kernel.org/stable/c/465f511f59a0fa7a80d5d1073c4b24f28ea38f58"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00627,"epssPercentile":0.48704,"scores":{"vendor":5.9,"cna":7.5},"ingestedAt":"2026-09-14T15:23:07.475Z","slug":"CVE-2026-89528","body":"## Overview\n\nA flaw was found in the Linux kernel's svcrdma component. A remote attacker could send specially crafted Read lists that exceed the page budget. This can lead to a NULL pointer dereference during Direct Memory Access (DMA) mapping, potentially causing a system crash and a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89528.json)\n\n**kernel: svcrdma: Reject Read lists that exceed the page budget** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nOut of support scope","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":206928,"id":"CVE-2026-89528","ts":1789749703484,"field":"cvss","old":"5.9","new":"7"},{"seq":206927,"id":"CVE-2026-89528","ts":1789749703484,"field":"severity","old":"medium","new":"high"},{"seq":203025,"id":"CVE-2026-89528","ts":1789403733395,"field":"cvss","old":"7.5","new":"5.9"},{"seq":203024,"id":"CVE-2026-89528","ts":1789403733395,"field":"severity","old":"high","new":"medium"},{"seq":197969,"id":"CVE-2026-89528","ts":1789384321194,"field":"cvss","old":"5.9","new":"7.5"},{"seq":197968,"id":"CVE-2026-89528","ts":1789384321194,"field":"severity","old":"medium","new":"high"},{"seq":183805,"id":"CVE-2026-89528","ts":1789356677467,"field":"cvss","old":"7.5","new":"5.9"},{"seq":183804,"id":"CVE-2026-89528","ts":1789356677467,"field":"severity","old":"high","new":"medium"},{"seq":153320,"id":"CVE-2026-89528","ts":1789285350031,"field":"cvss","old":null,"new":"7.5"},{"seq":153319,"id":"CVE-2026-89528","ts":1789285350031,"field":"severity","old":"none","new":"high"},{"seq":147624,"id":"CVE-2026-89528","ts":1789270211640,"field":"cvss","old":null,"new":"5.9"},{"seq":147623,"id":"CVE-2026-89528","ts":1789270211640,"field":"severity","old":"none","new":"medium"},{"seq":109378,"id":"CVE-2026-89528","ts":1789183731675,"field":"cvss","old":null,"new":"5.9"},{"seq":109377,"id":"CVE-2026-89528","ts":1789183731675,"field":"severity","old":"none","new":"medium"}]}