CVE-2024-42300

Kernel crash via per-CPU buffer race

Published Aug 17, 2024 · Updated Aug 5, 2026

A race condition in Linux 6.10 through 6.10.2 allows local users to crash the kernel while decompressing EROFS data. z_erofs_get_gbuf() derives a per-CPU buffer identifier before taking its lock, so CPU migration can cause z_erofs_put_gbuf() to release the wrong locked buffer. Reaching the fault requires local low-privileged access and a high-complexity timing race during EROFS decompression; the reported consequence is a kernel BUG and system interruption.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in Linux 6.10 through 6.10.2 allows local users to crash the kernel while decompressing EROFS data. z_erofs_get_gbuf() derives a per-CPU buffer identifier before taking its lock, so CPU migration can cause z_erofs_put_gbuf() to release the wrong locked buffer. Reaching the fault requires local low-privileged access and a high-complexity timing race during EROFS decompression; the reported consequence is a kernel BUG and system interruption.

The record

CVE
CVE-2024-42300
Published
Aug 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.10
  2. Affected versionversion=f36f3010f67611a45d66e773bc91e4c66a9abab5 <49b22e06a947727a6d1c802d2d9ad92420b90fc5
  3. Affected versionversion=f36f3010f67611a45d66e773bc91e4c66a9abab5 <7dc5537c3f8be87e005f0844a7626c987914f8fd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=f36f3010f67611a45d66e773bc91e4c66a9abab5 <49b22e06a947727a6d1c802d2d9ad92420b90fc5; version=f36f3010f67611a45d66e773bc91e4c66a9abab5 <7dc5537c3f8be87e005f0844a7626c987914f8fd

Published CVSS scores

7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7NIST NVDCVSS:3.1/AV:L/AC:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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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