CVE-2024-42249

Queued SPI message corruption via premature unoptimization

Published Aug 7, 2024 · Updated Aug 5, 2026

Memory corruption in the Linux kernel 6.9 through 6.9.9 allows local users to corrupt queued SPI messages through SPI operations. The spi_async() path calls spi_maybe_unoptimize_message() while the message can remain queued, altering it before the controller driver finishes using it. Exploitation requires local low-privileged access and a controller path processing asynchronous SPI messages; no confidentiality or availability impact is established.

CVSS severity3.3
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Linux kernel 6.9 through 6.9.9 allows local users to corrupt queued SPI messages through SPI operations. The spi_async() path calls spi_maybe_unoptimize_message() while the message can remain queued, altering it before the controller driver finishes using it. Exploitation requires local low-privileged access and a controller path processing asynchronous SPI messages; no confidentiality or availability impact is established.

The record

CVE
CVE-2024-42249
Published
Aug 7, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 7, 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=6.9
  2. Affected versionversion=7b1d87af14d9ae902ed0c5dc5fabf4eea5abdf02 <8b9af6d67517ce4a0015928b3cf35bfd2b1bc1c2
  3. Affected versionversion=7b1d87af14d9ae902ed0c5dc5fabf4eea5abdf02 <c86a918b1bdba78fb155184f8d88dfba1e63335d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.9; version=7b1d87af14d9ae902ed0c5dc5fabf4eea5abdf02 <8b9af6d67517ce4a0015928b3cf35bfd2b1bc1c2; version=7b1d87af14d9ae902ed0c5dc5fabf4eea5abdf02 <c86a918b1bdba78fb155184f8d88dfba1e63335d

Published CVSS scores

3.3Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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 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

No sourced classifications are available.

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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