{"id":"CVE-2026-89618","title":"eventfs: Initialize ei->children and ei->list in init_ei()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Initialize ei->children and ei->list in init_ei()\n\neventfs_create_dir() allocates the eventfs_inode and initializes it with\ninit_ei(). But this does not initia…","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":"Linux","product":"Linux","affected":["Linux >= 35ee34c0f6d578c9d245438ca29bf2e7024a5a65 < 069729282fbecfaa8a54062266c338ed23f08005","Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < c480f8af173d5b19c6d9c4311df6bbe352face9e","Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 5333e18e6b425fcc39c7fea89e3949a2a98bc5e4","Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 76e0f85f650738d768449dbccbc7c55d05f5b609","Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 1704aaaf5d22bc765c168402350d191e24e245bc","Linux >= 6.6.18 < 6.6.157","Linux 6.7"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:49:50.770Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89618","references":[{"url":"https://git.kernel.org/stable/c/069729282fbecfaa8a54062266c338ed23f08005"},{"url":"https://git.kernel.org/stable/c/c480f8af173d5b19c6d9c4311df6bbe352face9e"},{"url":"https://git.kernel.org/stable/c/5333e18e6b425fcc39c7fea89e3949a2a98bc5e4"},{"url":"https://git.kernel.org/stable/c/76e0f85f650738d768449dbccbc7c55d05f5b609"},{"url":"https://git.kernel.org/stable/c/1704aaaf5d22bc765c168402350d191e24e245bc"},{"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"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00175,"epssPercentile":0.06996,"ingestedAt":"2026-09-14T15:23:07.450Z","slug":"CVE-2026-89618","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Initialize ei->children and ei->list in init_ei()\n\neventfs_create_dir() allocates the eventfs_inode and initializes it with\ninit_ei(). But this does not initialize the eventfs_inode list_heads. If\nthe eventfs_create_dir() fails due to memory pressure, it will call\nfree_ei() before it initialized the lists, and that checks to make sure\nthe eventfs_inode has no children. But because the list wasn't\ninitialized, it will give a false warning.\n\nFix it by moving the list initialization into init_ei().\n\n[ Rewrote change log ]\n\n## Affected\n\n- `Linux >= 35ee34c0f6d578c9d245438ca29bf2e7024a5a65 < 069729282fbecfaa8a54062266c338ed23f08005`\n- `Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < c480f8af173d5b19c6d9c4311df6bbe352face9e`\n- `Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 5333e18e6b425fcc39c7fea89e3949a2a98bc5e4`\n- `Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 76e0f85f650738d768449dbccbc7c55d05f5b609`\n- `Linux >= 5790b1fb3d672d9a1fe3881a7181dfdbe741568f < 1704aaaf5d22bc765c168402350d191e24e245bc`\n- `Linux >= 6.6.18 < 6.6.157`\n- `Linux 6.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\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 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89618.json)","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"}]}