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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-43061 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix TX deadlock when using DMA `dmaengine_terminate_async` does not guarantee that the `__dma_tx_complete` callback will run. The callback is currently the only place where `dma->tx_running` gets cleared. If the transaction is canceled and the callback never runs, then `dma->tx_running` will never get cleared and we will never schedule new TX DMA transactions again. This change makes it so we clear `dma->tx_running` after we terminate the DMA transaction. This is "safe" because `serial8250_tx_dma_flush` is holding the UART port lock. The first thing the callback does is also grab the UART port lock, so access to `dma->tx_running` is serialized.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/2a72403b985aea6b4aac3171830492f9a387f9e1 kernel.org Patch 
https://git.kernel.org/stable/c/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41 kernel.org Patch 
https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d kernel.org Patch 
https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d kernel.org Patch 
https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7 kernel.org Patch 
https://git.kernel.org/stable/c/b5ad887339503103d0fbe9827b16ad287597c275 kernel.org Patch 
https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93 kernel.org Patch 
https://git.kernel.org/stable/c/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-667 Improper Locking cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43061
NVD Published Date:
05/05/2026
NVD Last Modified:
05/29/2026
Source:
kernel.org