CVE-2026-72148

PCIe DMA disruption via unsynchronized interrupt masks

Published Aug 15, 2026 · Updated Aug 15, 2026

Missing synchronization in the Linux dw-edma driver allows adjacent attackers to disrupt PCIe DMA via concurrent channel starts. dw_edma_v0_core_start() performs non-atomic read-modify-write updates to the shared DONE_INT_MASK and ABORT_INT_MASK registers without a common lock. A physically connected or compromised PCIe root host must start two eDMA channels concurrently; lost mask updates can wedge channels until reboot and can expose stale data or alter DMA buffers.

CVSS severity8.8
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing synchronization in the Linux dw-edma driver allows adjacent attackers to disrupt PCIe DMA via concurrent channel starts. dw_edma_v0_core_start() performs non-atomic read-modify-write updates to the shared DONE_INT_MASK and ABORT_INT_MASK registers without a common lock. A physically connected or compromised PCIe root host must start two eDMA channels concurrently; lost mask updates can wedge channels until reboot and can expose stale data or alter DMA buffers.

The record

CVE
CVE-2026-72148
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-820, T1499
Attack vector
adjacent
Privileges
unauthenticated

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

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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=5.3
  2. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <1553ca96e9df158d8f37137cf4bf5fb0dc981d94
  3. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1
  4. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <2247cc25a91fb1b5b86586ed55fdd5b725a7477c
  5. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <3ee0f478bb29b4ee892b178179a9a76ddd194149
  6. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <8ffba0171c6bbce5f093c6dba5a02c0805b31203
  7. Affected versionversion=7e4b8a4fbe2cecab0959e862604803d063f50029 <ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.3; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <1553ca96e9df158d8f37137cf4bf5fb0dc981d94; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <2247cc25a91fb1b5b86586ed55fdd5b725a7477c; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <3ee0f478bb29b4ee892b178179a9a76ddd194149; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <8ffba0171c6bbce5f093c6dba5a02c0805b31203; version=7e4b8a4fbe2cecab0959e862604803d063f50029 <ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.8LinuxCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-820Missing Synchronization
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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