CVE-2026-64170

Kernel crash via uncleared DMA channel pointers

Published Jul 19, 2026 · Updated Jul 19, 2026

Invalid pointer dereference in the Linux QUP SPI driver allows attackers to crash the kernel after a DMA setup failure. spi_qup_init_dma() releases failed transmit and receive DMA channels without clearing their stored pointers, so later cleanup dereferences an error pointer or releases a channel twice. Reachability requires QUP SPI hardware, a failed DMA-channel request, and a later probe error or driver unbind; no data disclosure or modification is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid pointer dereference in the Linux QUP SPI driver allows attackers to crash the kernel after a DMA setup failure. spi_qup_init_dma() releases failed transmit and receive DMA channels without clearing their stored pointers, so later cleanup dereferences an error pointer or releases a channel twice. Reachability requires QUP SPI hardware, a failed DMA-channel request, and a later probe error or driver unbind; no data disclosure or modification is documented.

The record

CVE
CVE-2026-64170
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=4.1
  2. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <0bb3bd442f0bdad3932739a61dd6c580c9c1955e
  3. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <45760b72e84c1a1498f1a8a9047184c85299da20
  4. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <4bb4764f2c51f03f657a28029eb0595d8223aab5
  5. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <4f4051e9d644c371c50de4a042b85bba6727d5c3
  6. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <8f9b61d255b1e989b8913b06c8ebe0aba5e1b238
  7. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <9e673affb92c29d9ba879bf4ea81c5e840166b56
  8. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <a7e8f3efd50a165ba0189f6dc57f7e51a7d149db
  9. Affected versionversion=612762e82ae6058d69b4ce734598491bf030afe7 <d577c55d189e7ae150973058d13e299b6855633f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.1; version=612762e82ae6058d69b4ce734598491bf030afe7 <0bb3bd442f0bdad3932739a61dd6c580c9c1955e; version=612762e82ae6058d69b4ce734598491bf030afe7 <45760b72e84c1a1498f1a8a9047184c85299da20; version=612762e82ae6058d69b4ce734598491bf030afe7 <4bb4764f2c51f03f657a28029eb0595d8223aab5; version=612762e82ae6058d69b4ce734598491bf030afe7 <4f4051e9d644c371c50de4a042b85bba6727d5c3; version=612762e82ae6058d69b4ce734598491bf030afe7 <8f9b61d255b1e989b8913b06c8ebe0aba5e1b238; version=612762e82ae6058d69b4ce734598491bf030afe7 <9e673affb92c29d9ba879bf4ea81c5e840166b56; version=612762e82ae6058d69b4ce734598491bf030afe7 <a7e8f3efd50a165ba0189f6dc57f7e51a7d149db; version=612762e82ae6058d69b4ce734598491bf030afe7 <d577c55d189e7ae150973058d13e299b6855633f

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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