CVE-2024-45028

Kernel crash via unchecked allocation failure

Published Sep 11, 2024 · Updated May 11, 2026

NULL pointer dereference in Linux 2.6.27 and later affected branches allows local users to crash the kernel through the MMC test interface. In drivers/mmc/core/mmc_test.c, the allocation-error path passes the NULL test->highmem pointer to __free_pages(). Reaching the fault requires local low-privileged access, the MMC test path, and a high-memory page-allocation failure; the consequence is an availability-only kernel crash.

CVSS severity5.5
Medium
EPSS probability0.25%
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 Linux 2.6.27 and later affected branches allows local users to crash the kernel through the MMC test interface. In drivers/mmc/core/mmc_test.c, the allocation-error path passes the NULL test->highmem pointer to __free_pages(). Reaching the fault requires local low-privileged access, the MMC test path, and a high-memory page-allocation failure; the consequence is an availability-only kernel crash.

The record

CVE
CVE-2024-45028
Published
Sep 11, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 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=2.6.27
  2. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <2b507b03991f44dfb202fc2a82c9874d1b1f0c06
  3. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <3b4e76ceae5b5a46c968bd952f551ce173809f63
  4. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <9b9ba386d7bfdbc38445932c90fa9444c0524bea
  5. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <a1e627af32ed60713941cbfc8075d44cad07f6dd
  6. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <cac2815f49d343b2f0acc4973d2c14918ac3ab0c
  7. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <e40515582141a9e7c84b269be699c05236a499a6
  8. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <e97be13a9f51284da450dd2a592e3fa87b49cdc9
  9. Affected versionversion=2661081f5ab9cb25359d27f88707a018cf4e68e9 <ecb15b8ca12c0cbdab81e307e9795214d8b90890

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <2b507b03991f44dfb202fc2a82c9874d1b1f0c06; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <3b4e76ceae5b5a46c968bd952f551ce173809f63; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <9b9ba386d7bfdbc38445932c90fa9444c0524bea; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <a1e627af32ed60713941cbfc8075d44cad07f6dd; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <cac2815f49d343b2f0acc4973d2c14918ac3ab0c; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <e40515582141a9e7c84b269be699c05236a499a6; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <e97be13a9f51284da450dd2a592e3fa87b49cdc9; version=2661081f5ab9cb25359d27f88707a018cf4e68e9 <ecb15b8ca12c0cbdab81e307e9795214d8b90890

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

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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
T1499.004Application or System Exploitation

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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