{"id":"CVE-2026-98584","title":"kernel: net/sched: fix potential stack infoleak in em_text_dump() (CVE-2026-98584)","summary":"A flaw was found in the Linux kernel's network traffic control subsystem. A local user can exploit this vulnerability to cause an information disclosure of kernel stack data. When dumping text search filter configurations, the kernel fails…","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvssSource":"vendor","cwe":"CWE-908","vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","affected":["enterprise_linux 6"],"published":"2026-10-18","updated":"2026-10-20","sourceUpdated":"2026-10-20T04:11:34+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98584.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98584.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98584"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2554966"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98584"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98584"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98584.mbox"},{"url":"https://git.kernel.org/stable/c/9923e1c537f91f3530b52d4efce85f3d9c131bf8"},{"url":"https://git.kernel.org/stable/c/0b160417826d22f24fc31a5b9cfae3b14aa70f76"},{"url":"https://git.kernel.org/stable/c/9c572a83037a7dcd653ba3a9cc468c16b857d0c9"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00198,"epssPercentile":0.09498,"ingestedAt":"2026-10-18T15:45:12.253Z","slug":"CVE-2026-98584","body":"## Overview\n\nA flaw was found in the Linux kernel's network traffic control subsystem. A local user can exploit this vulnerability to cause an information disclosure of kernel stack data. When dumping text search filter configurations, the kernel fails to initialize a stack structure before copying it into user-space response messages. A local user can query these filter details to view uninitialized kernel memory, potentially exposing sensitive system data.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98584.json)\n\n**kernel: net/sched: fix potential stack infoleak in em_text_dump()** — rated Low by Red Hat. Released 2026-10-18, updated 2026-10-20.\n\nAffected:\n\n- Red Hat Enterprise Linux 6\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\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\nOut of support scope","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225749,"id":"CVE-2026-98584","ts":1792498423567,"field":"cvss","old":null,"new":"3.3"},{"seq":225748,"id":"CVE-2026-98584","ts":1792498423567,"field":"severity","old":"none","new":"low"}]}