{"id":"CVE-2026-98726","title":"kernel: nvme-multipath: fix underflow in ANA log bounds checks (CVE-2026-98726)","summary":"A flaw was found in the Linux kernel's NVMe (Non-Volatile Memory Express) multipath subsystem. A malicious NVMe device can provide crafted Asymmetric Namespace Access (ANA) log data that triggers an integer underflow during buffer bounds v…","severity":"medium","cvss":4.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-125","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T00:35:36+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98726.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98726.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98726"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555169"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98726"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98726"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98726.mbox"},{"url":"https://git.kernel.org/stable/c/3045128294d347fd38542ad6e174b1b34d9c0751"},{"url":"https://git.kernel.org/stable/c/03a0c21f0fd7a872953aae5714303d8f38d1e567"},{"url":"https://git.kernel.org/stable/c/49e8a3224c91fd5fbf22f4adcca6c8209cfdd6fe"},{"url":"https://git.kernel.org/stable/c/e5cdb0c0a51e8ff49914ae16ef5360010c40cc85"},{"url":"https://git.kernel.org/stable/c/63fa2d9c9c37020bd2703fe2a6a38027b5abeb15"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.002,"epssPercentile":0.09735,"ingestedAt":"2026-10-18T16:47:32.507Z","slug":"CVE-2026-98726","body":"## Overview\n\nA flaw was found in the Linux kernel's NVMe (Non-Volatile Memory Express) multipath subsystem. A malicious NVMe device can provide crafted Asymmetric Namespace Access (ANA) log data that triggers an integer underflow during buffer bounds validation. This failure leads to an out-of-bounds memory read, potentially resulting in a Denial of Service (DoS) through a kernel crash or the disclosure of sensitive memory.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98726.json)\n\n**kernel: nvme-multipath: fix underflow in ANA log bounds checks** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-23.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\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 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":24.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228244,"id":"CVE-2026-98726","ts":1792758230595,"field":"cvss","old":null,"new":"4.4"},{"seq":228243,"id":"CVE-2026-98726","ts":1792758230595,"field":"severity","old":"none","new":"medium"}]}