{"id":"CVE-2026-98469","title":"kernel: KVM: arm64: Fix AArch32 DBGBXVR<n> handling (CVE-2026-98469)","summary":"A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) subsystem for ARM64 architectures. Improper handling of specific debug register accesses in 32-bit ARM (AArch32) mode causes the hypervisor to encounter an internal …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-617","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-24","sourceUpdated":"2026-10-24T14:27:46+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98469"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554830"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98469"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98469"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98469.mbox"},{"url":"https://git.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256a"},{"url":"https://git.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8e"},{"url":"https://git.kernel.org/stable/c/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00174,"epssPercentile":0.06861,"scores":{"vendor":5.5,"cna":7.1},"ingestedAt":"2026-10-18T15:45:12.299Z","slug":"CVE-2026-98469","body":"## Overview\n\nA flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) subsystem for ARM64 architectures. Improper handling of specific debug register accesses in 32-bit ARM (AArch32) mode causes the hypervisor to encounter an internal assertion failure. A user inside a guest virtual machine can exploit this vulnerability by accessing these registers, leading to immediate termination of the virtual machine and resulting in a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98469.json)\n\n**kernel: KVM: arm64: Fix AArch32 DBGBXVR<n> handling** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n\nNot affected:\n\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\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229512,"id":"CVE-2026-98469","ts":1793019828151,"field":"cvss","old":"7.1","new":"5.5"},{"seq":229511,"id":"CVE-2026-98469","ts":1793019828151,"field":"severity","old":"high","new":"medium"},{"seq":228962,"id":"CVE-2026-98469","ts":1792854122192,"field":"cvss","old":"5.5","new":"7.1"},{"seq":228961,"id":"CVE-2026-98469","ts":1792854122192,"field":"severity","old":"medium","new":"high"},{"seq":225673,"id":"CVE-2026-98469","ts":1792498349262,"field":"cvss","old":null,"new":"5.5"},{"seq":225672,"id":"CVE-2026-98469","ts":1792498349262,"field":"severity","old":"none","new":"medium"}]}