{"id":"CVE-2026-98434","title":"kernel: sysctl: Check range in  proc_dointvec_ms_jiffies_minmax (CVE-2026-98434)","summary":"A flaw was found in the Linux kernel. Due to a missing range validation check in the sysctl subsystem, configured minimum and maximum limits were not enforced during specific millisecond-to-jiffies conversions. A local user with permission…","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-1284","vendor":"Red Hat","product":"Linux","affected":["Linux >= d174174c6776a340f5c25aab1ac47a2dd950f380 < 1c23dba51dbf7e86c7c2e617c964be1411329cb4","Linux >= d174174c6776a340f5c25aab1ac47a2dd950f380 < 82431877d837a6c2593efd8e66ba28b35a220ca4","Linux 7.0"],"published":"2026-10-18","updated":"2026-10-19","sourceUpdated":"2026-10-19T10:46:35+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98434.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98434.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98434"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554821"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98434"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98434"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98434.mbox"},{"url":"https://git.kernel.org/stable/c/1c23dba51dbf7e86c7c2e617c964be1411329cb4"},{"url":"https://git.kernel.org/stable/c/82431877d837a6c2593efd8e66ba28b35a220ca4"}],"tags":["csaf","vex","red-hat","cve.org"],"ingestedAt":"2026-10-18T15:45:12.310Z","epss":0.00145,"epssPercentile":0.03714,"slug":"CVE-2026-98434","body":"## Overview\n\nA flaw was found in the Linux kernel. Due to a missing range validation check in the sysctl subsystem, configured minimum and maximum limits were not enforced during specific millisecond-to-jiffies conversions. A local user with permission to modify kernel parameters could provide out-of-bounds values, potentially leading to system instability or a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98434.json)\n\n**kernel: sysctl: Check range in  proc_dointvec_ms_jiffies_minmax** — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-19.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\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\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":224885,"id":"CVE-2026-98434","ts":1792411708666,"field":"cvss","old":null,"new":"5.5"},{"seq":224884,"id":"CVE-2026-98434","ts":1792411708666,"field":"severity","old":"none","new":"medium"}]}