{"id":"CVE-2026-98729","title":"kernel: x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h (CVE-2026-98729)","summary":"A flaw was found in the Linux kernel. On systems utilizing specific AMD processors, improper virtual address alignment for huge page memory mappings can allow a local user to cause a Denial of Service (DoS). When unmapping these misaligned…","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":"2026-10-23","sourceUpdated":"2026-10-23T00:35:31+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98729"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555163"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98729"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98729"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98729.mbox"},{"url":"https://git.kernel.org/stable/c/fe23680e6f1d52b8cc45d77bf7c54249508a81c7"},{"url":"https://git.kernel.org/stable/c/b46b2e2de47ca9449532b0a7110ed99f79061d6e"},{"url":"https://git.kernel.org/stable/c/d2457a7e2727dc747a61a50d65c2f259afce8c45"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00166,"epssPercentile":0.05771,"ingestedAt":"2026-10-18T16:47:32.506Z","slug":"CVE-2026-98729","body":"## Overview\n\nA flaw was found in the Linux kernel. On systems utilizing specific AMD processors, improper virtual address alignment for huge page memory mappings can allow a local user to cause a Denial of Service (DoS). When unmapping these misaligned memory ranges during teardown, the kernel encounters an internal assertion failure, resulting in a system crash.\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 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98729.json)\n\n**kernel: x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\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":228246,"id":"CVE-2026-98729","ts":1792758231150,"field":"cvss","old":null,"new":"5.5"},{"seq":228245,"id":"CVE-2026-98729","ts":1792758231150,"field":"severity","old":"none","new":"medium"}]}