CVE-2024-36000

Local service interruption via unlocked Hugetlb reservation uncharge

Published May 20, 2024 · Updated May 23, 2026

A reachable assertion in the Linux kernel allows local users to trigger a kernel warning through concurrent UFFDIO_COPY requests on Hugetlb pages. In mm/hugetlb.c, hugetlb_cgroup_uncharge_folio_rsvd() updates a reservation's cgroup pointer without holding hugetlb_lock. The path requires local access, Hugetlb-backed memory, userfaultfd, and competing reservation-map updates; kernels that panic on the warning crash the host.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A reachable assertion in the Linux kernel allows local users to trigger a kernel warning through concurrent UFFDIO_COPY requests on Hugetlb pages. In mm/hugetlb.c, hugetlb_cgroup_uncharge_folio_rsvd() updates a reservation's cgroup pointer without holding hugetlb_lock. The path requires local access, Hugetlb-backed memory, userfaultfd, and competing reservation-map updates; kernels that panic on the warning crash the host.

The record

CVE
CVE-2024-36000
Published
May 20, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-617, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.10
  2. Affected versionversion=5.9.7 <5.10
  3. Affected versionversion=79aa925bf239c234be8586780e482872dc4690dd <4c806333efea1000a2a9620926f560ad2e1ca7cc
  4. Affected versionversion=79aa925bf239c234be8586780e482872dc4690dd <538faabf31e9c53d8c870d114846fda958a0de10
  5. Affected versionversion=79aa925bf239c234be8586780e482872dc4690dd <b76b46902c2d0395488c8412e1116c2486cdfcb2
  6. Affected versionversion=79aa925bf239c234be8586780e482872dc4690dd <f6c5d21db16a0910152ec8aa9d5a7aed72694505
  7. Affected versionversion=f87004c0b2bdf0f1066b88795d8e6c1dfad6cea0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=5.9.7 <5.10; version=79aa925bf239c234be8586780e482872dc4690dd <4c806333efea1000a2a9620926f560ad2e1ca7cc; version=79aa925bf239c234be8586780e482872dc4690dd <538faabf31e9c53d8c870d114846fda958a0de10; version=79aa925bf239c234be8586780e482872dc4690dd <b76b46902c2d0395488c8412e1116c2486cdfcb2; version=79aa925bf239c234be8586780e482872dc4690dd <f6c5d21db16a0910152ec8aa9d5a7aed72694505; version=f87004c0b2bdf0f1066b88795d8e6c1dfad6cea0

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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