CVE-2026-72149Network attack vector

Service hang via miscalculated DMA burst size

Published Aug 15, 2026 · Updated Aug 15, 2026

Denial of service in the Tegra GPC DMA driver in affected Linux kernels allows remote attackers to hang DMA transfers via crafted traffic. The driver programs the configured maximum burst size even when the requested transfer length is not evenly divisible by it, leaving a partial final burst that never completes. Reachability requires Tegra GPC DMA hardware and a client able to request a nondivisible transfer length; the observed PL011 UART path stalls transmission.

CVSS severity7.5
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Tegra GPC DMA driver in affected Linux kernels allows remote attackers to hang DMA transfers via crafted traffic. The driver programs the configured maximum burst size even when the requested transfer length is not evenly divisible by it, leaving a partial final burst that never completes. Reachability requires Tegra GPC DMA hardware and a client able to request a nondivisible transfer length; the observed PL011 UART path stalls transmission.

The record

CVE
CVE-2026-72149
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-131, T1499.004
Attack vector
network
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

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=5.19
  2. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <4651df83b6c796daead3447e8fd874322918ee4f
  3. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1
  4. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <735951baa311c66353405dcac39375dd66441db0
  5. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <7926c1e4be86379945fb5f168888ac4d2aaf6c91
  6. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <8f0f5de1091119679d87f60dfb1acbff4b2a0ed3
  7. Affected versionversion=ee17028009d49fffed8cc963455d33b1fd3f1d08 <a3b76b54e06d73166af4d1a284a0e0711889060c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.19; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <4651df83b6c796daead3447e8fd874322918ee4f; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <735951baa311c66353405dcac39375dd66441db0; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <7926c1e4be86379945fb5f168888ac4d2aaf6c91; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <8f0f5de1091119679d87f60dfb1acbff4b2a0ed3; version=ee17028009d49fffed8cc963455d33b1fd3f1d08 <a3b76b54e06d73166af4d1a284a0e0711889060c

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.5Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-131Incorrect Calculation of Buffer Size
T1499.004Application or System Exploitation

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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