CVE-2024-0841

Kernel panic via invalid HugeTLB page size

Published Jan 28, 2024 · Updated Nov 6, 2025

A NULL pointer dereference in Linux kernel hugetlbfs on RHEL 8 and 9 allows local users to trigger a system panic via fsconfig. hugetlbfs_parse_param sets hstate to NULL after an invalid page-size update, and FSCONFIG_CMD_CREATE then dereferences it in hugetlbfs_fill_super. Exploitation requires CAP_SYS_ADMIN in the initial user namespace, and the demonstrated consequence is a host-wide denial of service.

CVSS severity6.6
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL pointer dereference in Linux kernel hugetlbfs on RHEL 8 and 9 allows local users to trigger a system panic via fsconfig. hugetlbfs_parse_param sets hstate to NULL after an invalid page-size update, and FSCONFIG_CMD_CREATE then dereferences it in hugetlbfs_fill_super. Exploitation requires CAP_SYS_ADMIN in the initial user namespace, and the demonstrated consequence is a host-wide denial of service.

The record

CVE
CVE-2024-0841
Published
Jan 28, 2024
Updated
Nov 6, 2025
Vendor
Red Hat
Product
Red Hat Enterprise Linux 8
Classifications
CWE-476, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.

Published CVSS scores

6.6Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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