CVE-2026-46296

Local system crash via invalid DMA release

Published Jun 8, 2026 · Updated Jun 8, 2026

NULL-pointer dereference in the Linux Kernel s3c64xx SPI driver allows local users to crash an affected system during driver unbind. The remove() callback releases DMA channels even when s3c64xx_spi_prepare_transfer() has not allocated them, dereferencing a null channel pointer. Exploitation requires local access and an affected Samsung S3C64xx SPI controller driver to be unbound; the reported consequence is a kernel crash, with no confidentiality or integrity impact.

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 Linux Kernel s3c64xx SPI driver allows local users to crash an affected system during driver unbind. The remove() callback releases DMA channels even when s3c64xx_spi_prepare_transfer() has not allocated them, dereferencing a null channel pointer. Exploitation requires local access and an affected Samsung S3C64xx SPI controller driver to be unbound; the reported consequence is a kernel crash, with no confidentiality or integrity impact.

The record

CVE
CVE-2026-46296
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0
  2. Affected versionversion=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <1108b8722b9ff0cdd3e8aa18d98244fcd93b6760
  3. Affected versionversion=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <1b66f16a571a10ba8889ac471755c8af9c5b9266
  4. Affected versionversion=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <22788b1a8611380b141e09a8896702e32d164238
  5. Affected versionversion=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <323a258f4b1916b5a3098618e036e033b2f2317f
  6. Affected versionversion=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <45daacbead8a009844bd5dba6cfa731332184d17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.0; version=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <1108b8722b9ff0cdd3e8aa18d98244fcd93b6760; version=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <1b66f16a571a10ba8889ac471755c8af9c5b9266; version=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <22788b1a8611380b141e09a8896702e32d164238; version=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <323a258f4b1916b5a3098618e036e033b2f2317f; version=f52b03c707444c5a3d1a0b9c5724f93ddc3c588e <45daacbead8a009844bd5dba6cfa731332184d17

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.

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

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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