{"id":"CVE-2026-89618","title":"kernel: eventfs: Initialize ei->children and ei->list in init_ei() (CVE-2026-89618)","summary":"A flaw was found in the Linux kernel's eventfs component. When the `eventfs_create_dir()` function fails due to memory pressure, an uninitialized internal data structure can cause the system to issue a misleading warning during the cleanup…","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-824","vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","affected":["enterprise_linux 10"],"published":"2026-09-11","updated":"2026-09-18","sourceUpdated":"2026-09-18T22:40:27+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89618.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89618.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89618"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532303"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89618"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89618"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89618.mbox"},{"url":"https://git.kernel.org/stable/c/1704aaaf5d22bc765c168402350d191e24e245bc"},{"url":"https://git.kernel.org/stable/c/5333e18e6b425fcc39c7fea89e3949a2a98bc5e4"},{"url":"https://git.kernel.org/stable/c/76e0f85f650738d768449dbccbc7c55d05f5b609"},{"url":"https://git.kernel.org/stable/c/c480f8af173d5b19c6d9c4311df6bbe352face9e"},{"url":"https://git.kernel.org/stable/c/069729282fbecfaa8a54062266c338ed23f08005"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00175,"epssPercentile":0.07286,"ingestedAt":"2026-09-14T15:23:07.450Z","slug":"CVE-2026-89618","body":"## Overview\n\nA flaw was found in the Linux kernel's eventfs component. When the `eventfs_create_dir()` function fails due to memory pressure, an uninitialized internal data structure can cause the system to issue a misleading warning during the cleanup process. This incorrect error reporting could lead to confusion in system diagnostics.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89618.json)\n\n**kernel: eventfs: Initialize ei->children and ei->list in init_ei()** — rated Low by Red Hat. Released 2026-09-11, updated 2026-09-18.\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":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":208067,"id":"CVE-2026-89618","ts":1789922703078,"field":"cvss","old":"0","new":"5.5"},{"seq":208066,"id":"CVE-2026-89618","ts":1789922703078,"field":"severity","old":"none","new":"medium"},{"seq":204001,"id":"CVE-2026-89618","ts":1789490230995,"field":"cvss","old":null,"new":"0"},{"seq":147394,"id":"CVE-2026-89618","ts":1789270210737,"field":"cvss","old":null,"new":"0"},{"seq":109148,"id":"CVE-2026-89618","ts":1789183730501,"field":"cvss","old":null,"new":"0"}]}