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7.5
HIGH CVSS 3.1
CVE-2026-72149
dmaengine: tegra: Fix burst size calculation
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: tegra: Fix burst size calculation Currently, the Tegra GPC DMA hardware requires the transfer length to be a multiple of the max burst size configured for the channel. When a client requests a transfer where the length is not evenly divisible by the configured max burst size, the DMA hangs with partial burst at the end. Fix this by reducing the burst size to the largest power-of-2 value that evenly divides the transfer length. For example, a 40-byte transfer with a 16-byte max burst will now use an 8-byte burst (40 / 8 = 5 complete bursts) instead of causing a hang. This issue was observed with the PL011 UART driver where TX DMA transfers of arbitrary lengths were stuck.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

Yes !

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72149 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Adjust DMA burst size calculation to avoid hangs on partial bursts.
  • Update the Linux kernel to a fixed version.
  • Apply the patch for burst size calculation.
  • Ensure transfer lengths are multiples of burst size.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72149.

URL Resource
https://git.kernel.org/stable/c/4651df83b6c796daead3447e8fd874322918ee4f
https://git.kernel.org/stable/c/6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1
https://git.kernel.org/stable/c/735951baa311c66353405dcac39375dd66441db0
https://git.kernel.org/stable/c/7926c1e4be86379945fb5f168888ac4d2aaf6c91
https://git.kernel.org/stable/c/8f0f5de1091119679d87f60dfb1acbff4b2a0ed3
https://git.kernel.org/stable/c/a3b76b54e06d73166af4d1a284a0e0711889060c
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72149 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72149 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72149 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72149 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '735951baa311c66353405dcac39375dd66441db0', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '8f0f5de1091119679d87f60dfb1acbff4b2a0ed3', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': 'a3b76b54e06d73166af4d1a284a0e0711889060c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '7926c1e4be86379945fb5f168888ac4d2aaf6c91', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '4651df83b6c796daead3447e8fd874322918ee4f', 'versionType': 'git'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '735951baa311c66353405dcac39375dd66441db0', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '8f0f5de1091119679d87f60dfb1acbff4b2a0ed3', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': 'a3b76b54e06d73166af4d1a284a0e0711889060c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '7926c1e4be86379945fb5f168888ac4d2aaf6c91', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '4651df83b6c796daead3447e8fd874322918ee4f', 'versionType': 'git'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '735951baa311c66353405dcac39375dd66441db0', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '8f0f5de1091119679d87f60dfb1acbff4b2a0ed3', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': 'a3b76b54e06d73166af4d1a284a0e0711889060c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '7926c1e4be86379945fb5f168888ac4d2aaf6c91', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1', 'versionType': 'git'}, {'status': 'affected', 'version': 'ee17028009d49fffed8cc963455d33b1fd3f1d08', 'lessThan': '4651df83b6c796daead3447e8fd874322918ee4f', 'versionType': 'git'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/dma/tegra186-gpc-dma.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: dmaengine: tegra: Fix burst size calculation Currently, the Tegra GPC DMA hardware requires the transfer length to be a multiple of the max burst size configured for the channel. When a client requests a transfer where the length is not evenly divisible by the configured max burst size, the DMA hangs with partial burst at the end. Fix this by reducing the burst size to the largest power-of-2 value that evenly divides the transfer length. For example, a 40-byte transfer with a 16-byte max burst will now use an 8-byte burst (40 / 8 = 5 complete bursts) instead of causing a hang. This issue was observed with the PL011 UART driver where TX DMA transfers of arbitrary lengths were stuck.
    Added Reference https://git.kernel.org/stable/c/4651df83b6c796daead3447e8fd874322918ee4f
    Added Reference https://git.kernel.org/stable/c/6e37e9e230c7e848bd8e8cd4db15bb18bcf11ad1
    Added Reference https://git.kernel.org/stable/c/735951baa311c66353405dcac39375dd66441db0
    Added Reference https://git.kernel.org/stable/c/7926c1e4be86379945fb5f168888ac4d2aaf6c91
    Added Reference https://git.kernel.org/stable/c/8f0f5de1091119679d87f60dfb1acbff4b2a0ed3
    Added Reference https://git.kernel.org/stable/c/a3b76b54e06d73166af4d1a284a0e0711889060c
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
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Scope
Confidentiality Impact
Integrity Impact
Availability Impact