{"id":"CVE-2026-98592","title":"kernel: net: spacemit: clear TX descriptor on fragment mapping failure (CVE-2026-98592)","summary":"A flaw was found in the Linux kernel's SpacemiT Ethernet driver. During network packet transmission, a failure to map packet fragments causes the driver to release memory buffers without properly clearing the corresponding hardware descrip…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-825","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-20","sourceUpdated":"2026-10-20T04:52:13+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98592"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554985"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98592"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98592"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98592.mbox"},{"url":"https://git.kernel.org/stable/c/ca9986cc824f2feb79b4a83e5f6f4c24c2140448"},{"url":"https://git.kernel.org/stable/c/3001a103a367c6051c43aff363b6979c10e65347"},{"url":"https://git.kernel.org/stable/c/2d14720beb58870b15a52b236c3ab0be0e06e915"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00198,"epssPercentile":0.09498,"ingestedAt":"2026-10-18T15:45:12.249Z","slug":"CVE-2026-98592","body":"## Overview\n\nA flaw was found in the Linux kernel's SpacemiT Ethernet driver. During network packet transmission, a failure to map packet fragments causes the driver to release memory buffers without properly clearing the corresponding hardware descriptors. A local user able to trigger transmission mapping errors can cause the network controller's Direct Memory Access (DMA) engine to access unmapped memory, potentially resulting in memory corruption or a Denial of Service (DoS) through 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 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98592.json)\n\n**kernel: net: spacemit: clear TX descriptor on fragment mapping failure** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.\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":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225722,"id":"CVE-2026-98592","ts":1792498386070,"field":"cvss","old":null,"new":"4.7"},{"seq":225721,"id":"CVE-2026-98592","ts":1792498386070,"field":"severity","old":"none","new":"medium"}]}