---
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:

  eventfs: Initialize ei->children and ei->list in init_ei()

  eventfs_create_dir() allocates the eventfs_inode and initializes it with
  init_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'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

eventfs: Initialize ei->children and ei->list in init_ei()

eventfs_create_dir() allocates the eventfs_inode and initializes it with
init_ei(). But this does not initialize the eventfs_inode list_heads. If
the eventfs_create_dir() fails due to memory pressure, it will call
free_ei() before it initialized the lists, and that checks to make sure
the eventfs_inode has no children. But because the list wasn't
initialized, it will give a false warning.

Fix it by moving the list initialization into init_ei().

[ Rewrote change log ]

## 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`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **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)