CVE Database›Document archive›CVE-2026-99173

CVE-2026-99173

kernel: eventfs: Free the eventfs_inode after an rcu grace period too

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · October 28, 2026

Updated · November 1, 2026

Description

A flaw was found in the Linux kernel's eventfs subsystem. An improper synchronization issue allows an internal directory structure (eventfs_inode) to be freed while still being accessed during file path validation, leading to a use-after-free condition. A local user could exploit this vulnerability during concurrent file operations to trigger a kernel crash, resulting in a denial of service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-825 · Expired Pointer Dereference