VDB-361183 · CVE-2026-43061 · Nessus 312273

Linux Kernel up to 6.19.9 dmaengine_terminate_async deserialization

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4.9	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.19.9. This impacts the function dmaengine_terminate_async. This manipulation causes deserialization. This vulnerability appears as CVE-2026-43061. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.19.9 and classified as critical. Affected by this vulnerability is the function dmaengine_terminate_async. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. The impact remains unknown. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-43061 since 05/01/2026. The exploitation appears to be difficult. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/08/2026).

The vulnerability scanner Nessus provides a plugin with the ID 312273 (Linux Distros Unpatched Vulnerability : CVE-2026-43061), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.167, 6.6.130, 6.12.78, 6.18.20 or 6.19.10 eliminates this vulnerability. Applying the patch 8190f9ab6ad90cb97652adbebd238b874a4ef70d/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf/d2719a0a9c3439abf67843a5504b7afccd9ded93/2a72403b985aea6b4aac3171830492f9a387f9e1/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41/b5ad887339503103d0fbe9827b16ad287597c275/a424a34b8faddf97b5af41689087e7a230f79ba7 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (312273) and CERT Bund (WID-SEC-2026-1385). Be aware that VulDB is the high quality source for vulnerability data.

Affected

Google Container-Optimized OS
Debian Linux
Red Hat Enterprise Linux
Ubuntu Linux
SUSE Linux
Oracle Linux
SUSE openSUSE
Open Source Linux Kernel
RESF Rocky Linux
Microsoft Azure Linux

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 312273
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-43061

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Timelineinfo

05/01/2026 CVE reserved
05/05/2026 +4 days Advisory disclosed
05/05/2026 +0 days VulDB entry created
06/08/2026 +34 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43061 (🔒)
GCVE (CVE): GCVE-0-2026-43061
GCVE (VulDB): GCVE-100-361183
CERT Bund: WID-SEC-2026-1385 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/05/2026 19:00
Updated: 06/08/2026 13:13
Changes: 05/05/2026 19:00 (58), 05/06/2026 20:44 (7), 05/06/2026 23:42 (2), 06/01/2026 04:42 (11), 06/08/2026 13:13 (1)
Complete: 🔍
Cache ID: 216::103