CVE-2026-43061

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43061
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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2a72403b985aea6b4aac3171830492f9a387f9e1 Patch
https://git.kernel.org/stable/c/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41 Patch
https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d Patch
https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d Patch
https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7 Patch
https://git.kernel.org/stable/c/b5ad887339503103d0fbe9827b16ad287597c275 Patch
https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93 Patch
https://git.kernel.org/stable/c/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

29 May 2026, 18:24

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.14:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/2a72403b985aea6b4aac3171830492f9a387f9e1 - () https://git.kernel.org/stable/c/2a72403b985aea6b4aac3171830492f9a387f9e1 - Patch
References () https://git.kernel.org/stable/c/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41 - () https://git.kernel.org/stable/c/5f6b17562f03fc65c7d3474ef8f1959b19d1ca41 - Patch
References () https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d - () https://git.kernel.org/stable/c/79a19bd936bb35f56ef0ccab1b3b59ebce8c762d - Patch
References () https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d - () https://git.kernel.org/stable/c/8190f9ab6ad90cb97652adbebd238b874a4ef70d - Patch
References () https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7 - () https://git.kernel.org/stable/c/a424a34b8faddf97b5af41689087e7a230f79ba7 - Patch
References () https://git.kernel.org/stable/c/b5ad887339503103d0fbe9827b16ad287597c275 - () https://git.kernel.org/stable/c/b5ad887339503103d0fbe9827b16ad287597c275 - Patch
References () https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93 - () https://git.kernel.org/stable/c/d2719a0a9c3439abf67843a5504b7afccd9ded93 - Patch
References () https://git.kernel.org/stable/c/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf - () https://git.kernel.org/stable/c/f76d91271bcacbd759a2e4ee3ea61faa6a727ccf - Patch
CWE CWE-667
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel

05 May 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-05 16:16

Updated : 2026-05-29 18:24

NVD link : CVE-2026-43061

Mitre link : CVE-2026-43061

CVE.ORG link : CVE-2026-43061

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking