CVE-2024-36891

Kernel crash via null maple-tree node

Published May 30, 2024 · Updated May 11, 2026

Null pointer dereference in affected Linux kernel releases from 6.1 allows local users to trigger a kernel oops through VMA mappings. mas_empty_area_rev() calls mas_start() and then mas_data_end() while the maple state can hold a NULL node, causing mas_data_end() to inspect that node. Triggering requires a local user to unmap every VMA until the maple tree is empty and then map a VMA that reaches the faulty state, interrupting the host through a kernel oops.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null pointer dereference in affected Linux kernel releases from 6.1 allows local users to trigger a kernel oops through VMA mappings. mas_empty_area_rev() calls mas_start() and then mas_data_end() while the maple state can hold a NULL node, causing mas_data_end() to inspect that node. Triggering requires a local user to unmap every VMA until the maple tree is empty and then map a VMA that reaches the faulty state, interrupting the host through a kernel oops.

The record

CVE
CVE-2024-36891
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <6c9c7c1e63b198a8b979ad963eb21410f10ccb00
  2. Affected versionversion=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <883e5d542bbdddbddeba60250cb482baf3ae2415
  3. Affected versionversion=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <955a923d2809803980ff574270f81510112be9cf
  4. Affected versionversion=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <f3956791cf526540addd3295e4c1e0f0442486cc
  5. Affected versionversion=6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <6c9c7c1e63b198a8b979ad963eb21410f10ccb00; version=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <883e5d542bbdddbddeba60250cb482baf3ae2415; version=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <955a923d2809803980ff574270f81510112be9cf; version=54a611b605901c7d5d05b6b8f5d04a6ceb0962aa <f3956791cf526540addd3295e4c1e0f0442486cc; version=6.1

Published CVSS scores

5.5UbuntuCVSS: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

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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-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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