Description
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 ]
Published: 2026-09-11
Score: 0.0 Low
EPSS: < 1% Very Low
KEV: No
Impact: False diagnostic warning due to uninitialized list heads in eventfs inode initialization
Action: Apply Patch
AI Analysis

Impact

During eventfs directory list heads of the eventfs_inode. When cleanup occurs after a memory‑pressure induced allocation failure, the routine incorrectly reports that the inode has child objects, producing a false warning. This flaw does not enable arbitrary code execution, privilege escalation, or compromise confidentiality, integrity, or availability; it is a non‑exploitable diagnostic issue classified as CWE‑824.

Affected Systems

The vulnerability resides in the core Linux kernel source. All distributions that ship the upstream kernel, including the Linux Linux vendor, are affected. The issue applies to any kernel build prior to the inclusion of commit 1704aaaf5d22bc, which relocates the list initialisation into init_ei(). Vendors that provide customized kernels should ensure the patch is integrated or compile with the updated source.

Risk and Exploitability

The EPSS score is listed as less than 1 %, indicating a very low probability that the flaw would be actively exploited. The flaw is not listed in CISA’s KEV catalog. The likely attack vector would involve an attacker inducing memory pressure that causes eventfs_create_dir() to fail and trigger the erroneous warning an exploitable condition. Consequently, the overall risk is low and the impact is limited to a misleading diagnostic message.

Generated by OpenCVE AI on September 13, 2026 at 05:33 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Linux kernel to a release that contains commit 1704aaaf5d22bc, which initialises list heads during eventfs inode creation.
  • Re‑build or install any custom kernel modules that depend on the eventfs subsystem so that they link against the fixed kernel code.
  • Disable the eventfs subsystem if it is not required in the system configuration (remove CONFIG_EVENTFS or set it to 'n'), thus eliminating the possibility of the false warning.

Generated by OpenCVE AI on September 13, 2026 at 05:33 UTC.

Tracking

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Advisories

No advisories yet.

History

Sat, 12 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-824
References
Metrics threat_severity

None

cvssV3_1

{'score': 0.0, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N'}

threat_severity

Low


Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
Description 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 ]
Title eventfs: Initialize ei->children and ei->list in init_ei()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:45:17.397Z

Reserved: 2026-09-11T19:38:34.736Z

Link: CVE-2026-89618

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:19:47.040

Modified: 2026-09-11T20:19:47.040

Link: CVE-2026-89618

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-11T19:45:17Z

Links: CVE-2026-89618 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-13T08:30:16Z

Weaknesses
  • CWE-824

    Access of Uninitialized Pointer