CVE-2024-27068

Kernel memory exhaustion via leaked efuse buffer

Published May 1, 2024 · Updated May 11, 2026

Memory leak in the MediaTek LVTS thermal driver in Linux allows local users to exhaust kernel memory through repeated allocation failures. In lvts_calibration_read(), a failed devm_krealloc() returns ENOMEM without freeing the temporary efuse buffer allocated for calibration data. Exploitation requires local low-privilege access, an active MediaTek LVTS driver, and repeated allocation failures; the bounded consequence is resource exhaustion.

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

Memory leak in the MediaTek LVTS thermal driver in Linux allows local users to exhaust kernel memory through repeated allocation failures. In lvts_calibration_read(), a failed devm_krealloc() returns ENOMEM without freeing the temporary efuse buffer allocated for calibration data. Exploitation requires local low-privilege access, an active MediaTek LVTS driver, and repeated allocation failures; the bounded consequence is resource exhaustion.

The record

CVE
CVE-2024-27068
Published
May 1, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 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=6.3
  2. Affected versionversion=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <2db869da91afd48e5b9ec76814709be49662b07d
  3. Affected versionversion=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <9b02197596671800dd934609384b1aca7c6ad218
  4. Affected versionversion=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <a37f3652bee468f879d35fe2da9ede3f1dcbb7be
  5. Affected versionversion=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <ca93bf607a44c1f009283dac4af7df0d9ae5e357

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <2db869da91afd48e5b9ec76814709be49662b07d; version=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <9b02197596671800dd934609384b1aca7c6ad218; version=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <a37f3652bee468f879d35fe2da9ede3f1dcbb7be; version=f5f633b18234cecb0e6ee6e5fbb358807dda15c3 <ca93bf607a44c1f009283dac4af7df0d9ae5e357

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NVDCVSS: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-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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