CVE-2026-64168

Local service interruption via invalid DMA release

Published Jul 19, 2026 · Updated Jul 19, 2026

NULL pointer dereference in the SPI Spreadtrum driver in Linux Kernel allows local users to crash the system during device probe. The late probe-error path calls sprd_spi_dma_release() after DMA setup has failed and PIO fallback has left DMA disabled, so it dereferences an error pointer or releases a channel twice. Reachability requires the Spreadtrum SPI controller driver, a DMA setup failure, and a later probe failure; published sources do not identify the low-privileged action that forces those conditions.

CVSS severity5.5
Medium
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

NULL pointer dereference in the SPI Spreadtrum driver in Linux Kernel allows local users to crash the system during device probe. The late probe-error path calls sprd_spi_dma_release() after DMA setup has failed and PIO fallback has left DMA disabled, so it dereferences an error pointer or releases a channel twice. Reachability requires the Spreadtrum SPI controller driver, a DMA setup failure, and a later probe failure; published sources do not identify the low-privileged action that forces those conditions.

The record

CVE
CVE-2026-64168
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

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=386119bc7be9fa5114ced0274a22a943df890b4b <0cdea166c1a07c200caf9d0b722224fca43b23ae
  2. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <3d67fffb74267772d461c02c67f1eff893ad547d
  3. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <450c319dd04d0eeff4184889768f7ada826a2e35
  4. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <a8f233fb0c7be29b97cd249f64120bf35ce72805
  5. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <b6f1acf4e57ccf708cdc0cb70f5bb5b65162963b
  6. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <be409d2bbe9ca7da7b05cc7dde7499bc481f0766
  7. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <be74e276111f3c23b8e040c8c5e308f67a573add
  8. Affected versionversion=386119bc7be9fa5114ced0274a22a943df890b4b <c33b4496e95d04722055446c0a31213639438536
  9. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=386119bc7be9fa5114ced0274a22a943df890b4b <0cdea166c1a07c200caf9d0b722224fca43b23ae; version=386119bc7be9fa5114ced0274a22a943df890b4b <3d67fffb74267772d461c02c67f1eff893ad547d; version=386119bc7be9fa5114ced0274a22a943df890b4b <450c319dd04d0eeff4184889768f7ada826a2e35; version=386119bc7be9fa5114ced0274a22a943df890b4b <a8f233fb0c7be29b97cd249f64120bf35ce72805; version=386119bc7be9fa5114ced0274a22a943df890b4b <b6f1acf4e57ccf708cdc0cb70f5bb5b65162963b; version=386119bc7be9fa5114ced0274a22a943df890b4b <be409d2bbe9ca7da7b05cc7dde7499bc481f0766; version=386119bc7be9fa5114ced0274a22a943df890b4b <be74e276111f3c23b8e040c8c5e308f67a573add; version=386119bc7be9fa5114ced0274a22a943df890b4b <c33b4496e95d04722055446c0a31213639438536; version=5.1

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

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-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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