CVE-2023-52909

kernel: nfsd: fix handling of cached open files in nfsd4_open codepath

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · August 21, 2024

Updated · October 29, 2026

Description

A NULL pointer dereference flaw was found in the Linux kernel's NFS server support functionality. This issue could allow a local user to crash the system.

Statement

This issue only affects Red Hat Enterprise Linux 9.

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

To mitigate this issue, prevent module nfsd from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

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-476 · NULL Pointer Dereference