Improper Locking Affecting kernel-docs package, versions <6.4.0-150700.53.73.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.09% (1st percentile)

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  • Snyk IDSNYK-SLES157-KERNELDOCS-18202767
  • published22 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

NewCVE-2026-43061  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-docs to version 6.4.0-150700.53.73.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-docs package and not the kernel-docs package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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-&gt;tx_running gets cleared. If the transaction is canceled and the callback never runs, then dma-&gt;tx_running will never get cleared and we will never schedule new TX DMA transactions again.

This change makes it so we clear dma-&gt;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-&gt;tx_running is serialized.

CVSS Base Scores

version 3.1