CVE-2026-68466

Kernel memory corruption via DMA timeout mishandling

Published Aug 15, 2026 · Updated Aug 15, 2026

DMA timeout mishandling in the LPC32xx SLC NAND driver in Linux allows local users to corrupt kernel memory during NAND I/O. lpc32xx_xmit_dma() ignores the result of wait_for_completion_timeout(), unmaps a timed-out transfer, reports success, and leaves DMA able to access the buffer after it is unmapped. The path requires LPC32xx SLC NAND hardware and locally initiated flash access; continued DMA can disclose or overwrite kernel data, corrupt flash contents, or crash the system.

CVSS severity8.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

DMA timeout mishandling in the LPC32xx SLC NAND driver in Linux allows local users to corrupt kernel memory during NAND I/O. lpc32xx_xmit_dma() ignores the result of wait_for_completion_timeout(), unmaps a timed-out transfer, reports success, and leaves DMA able to access the buffer after it is unmapped. The path requires LPC32xx SLC NAND hardware and locally initiated flash access; continued DMA can disclose or overwrite kernel data, corrupt flash contents, or crash the system.

The record

CVE
CVE-2026-68466
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=2944a44da09e46b6db2fd2c3334f242b09e05c43 <17a8ce84964f243c8f89dc7353ac7e8d3137bc74
  2. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <307e4f4c1d4e1575b3495ecc6e41aa2adc40f491
  3. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <623c4d8e740debb4af28981e3d4e209f9d0260a4
  4. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <8f5c3ee53a5dc1a0f7cfd780485f2c8b5d17f91d
  5. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <bd4a622786f92e1f183f7557ab89dd32891cef60
  6. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <c367af37ce7238c96c6071337149099467160746
  7. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <cb2031f8b226efbd13735c07b075e5f14ec11f6d
  8. Affected versionversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <cf7258f57d18026b8f77c0e80ff1805e9caf7250
  9. Affected versionversion=3.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2944a44da09e46b6db2fd2c3334f242b09e05c43 <17a8ce84964f243c8f89dc7353ac7e8d3137bc74; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <307e4f4c1d4e1575b3495ecc6e41aa2adc40f491; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <623c4d8e740debb4af28981e3d4e209f9d0260a4; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <8f5c3ee53a5dc1a0f7cfd780485f2c8b5d17f91d; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <bd4a622786f92e1f183f7557ab89dd32891cef60; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <c367af37ce7238c96c6071337149099467160746; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <cb2031f8b226efbd13735c07b075e5f14ec11f6d; version=2944a44da09e46b6db2fd2c3334f242b09e05c43 <cf7258f57d18026b8f77c0e80ff1805e9caf7250; version=3.7

Published CVSS scores

8.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo