CVE-2024-27028Network attack vector

Kernel crash via unchecked NULL TX buffer write

Published May 1, 2024 · Updated May 11, 2026

NULL-pointer dereference in the MediaTek SPI driver in Linux allows attackers to crash affected systems via SPI transfers. The interrupt handler writes through trans->tx_buf without first checking whether the spi_transfer TX buffer is NULL. The driver and MediaTek SPI hardware must be present and processing a transfer with no TX buffer; the resulting invalid-memory write interrupts service by crashing the kernel.

CVSS severity6.5
Medium
EPSS probability1.18%
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 the MediaTek SPI driver in Linux allows attackers to crash affected systems via SPI transfers. The interrupt handler writes through trans->tx_buf without first checking whether the spi_transfer TX buffer is NULL. The driver and MediaTek SPI hardware must be present and processing a transfer with no TX buffer; the resulting invalid-memory write interrupts service by crashing the kernel.

The record

CVE
CVE-2024-27028
Published
May 1, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

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=1ce24864bff40e11500a699789412115fdf244bf <1784053cf10a14c4ebd8a890bad5cfe1bee51713
  2. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <2342b05ec5342a519e00524a507f7a6ea6791a38
  3. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <55f8ea6731aa64871ee6aef7dba53ee9f9f3b2f6
  4. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <62b1f837b15cf3ec2835724bdf8577e47d14c753
  5. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <766ec94cc57492eab97cbbf1595bd516ab0cb0e4
  6. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <a20ad45008a7c82f1184dc6dee280096009ece55
  7. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <bcfcdf19698024565eff427706ebbd8df65abd11
  8. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <bea82355df9e1c299625405b1947fc9b26b4c6d4
  9. Affected versionversion=1ce24864bff40e11500a699789412115fdf244bf <c10fed329c1c104f375a75ed97ea3abef0786d62
  10. Affected versionversion=4.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1ce24864bff40e11500a699789412115fdf244bf <1784053cf10a14c4ebd8a890bad5cfe1bee51713; version=1ce24864bff40e11500a699789412115fdf244bf <2342b05ec5342a519e00524a507f7a6ea6791a38; version=1ce24864bff40e11500a699789412115fdf244bf <55f8ea6731aa64871ee6aef7dba53ee9f9f3b2f6; version=1ce24864bff40e11500a699789412115fdf244bf <62b1f837b15cf3ec2835724bdf8577e47d14c753; version=1ce24864bff40e11500a699789412115fdf244bf <766ec94cc57492eab97cbbf1595bd516ab0cb0e4; version=1ce24864bff40e11500a699789412115fdf244bf <a20ad45008a7c82f1184dc6dee280096009ece55; version=1ce24864bff40e11500a699789412115fdf244bf <bcfcdf19698024565eff427706ebbd8df65abd11; version=1ce24864bff40e11500a699789412115fdf244bf <bea82355df9e1c299625405b1947fc9b26b4c6d4; version=1ce24864bff40e11500a699789412115fdf244bf <c10fed329c1c104f375a75ed97ea3abef0786d62; version=4.11

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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)
Vectornetwork
Privilegesunauthenticated
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.

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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