{"id":"CVE-2026-98845","title":"kernel: tpm: Disable TPM on null key name mismatch (CVE-2026-98845)","summary":"A flaw was found in the Linux kernel's Trusted Platform Module (TPM) subsystem. This vulnerability allows an attacker to bypass TPM reset protections because the driver fails to disable the device when a null key integrity check fails. Con…","severity":"medium","cvss":4.5,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","cvssSource":"vendor","cwe":"CWE-393","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-10-18","updated":"2026-10-23","sourceUpdated":"2026-10-23T22:14:21+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98845.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98845.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98845"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2555219"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98845"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98845"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98845.mbox"},{"url":"https://git.kernel.org/stable/c/a03d0c64cd827a622578623a78defd66b6593b82"},{"url":"https://git.kernel.org/stable/c/96c46c75b0d470b4204f9fe1bdb075cd2ebaebfa"},{"url":"https://git.kernel.org/stable/c/f6599d8830fe7ddab7334cc17846fd9ac9a7fa50"},{"url":"https://git.kernel.org/stable/c/015fb29a748342a186f37b602ac70017098c8251"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00156,"epssPercentile":0.04729,"ingestedAt":"2026-10-18T16:47:32.466Z","slug":"CVE-2026-98845","body":"## Overview\n\nA flaw was found in the Linux kernel's Trusted Platform Module (TPM) subsystem. This vulnerability allows an attacker to bypass TPM reset protections because the driver fails to disable the device when a null key integrity check fails. Consequently, the TPM continues serving requests and cryptographic authorization sessions may proceed using uninitialized key handles, compromising the integrity of secure operations.\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-2026-98845.json)\n\n**kernel: tpm: Disable TPM on null key name mismatch** — 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":25,"depthScoreParts":{"impact":24.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":228604,"id":"CVE-2026-98845","ts":1792844810479,"field":"cvss","old":null,"new":"4.5"},{"seq":228603,"id":"CVE-2026-98845","ts":1792844810479,"field":"severity","old":"none","new":"medium"}]}