CVE-2026-43149

In the Linux kernel, the following vulnerability has been resolved: net: wan/fsl_ucc_hdlc: Fix dma_free_coherent() in uhdlc_memclean() The priv->rx_buffer and priv->tx_buffer are alloc'd together as contiguous buffers in uhdlc_init() but freed as two buffers in uhdlc_memclean(). Change the cleanup to only call dma_free_coherent() once on the whole buffer.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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/011ae5dd84dc9f05eb9b8e1adff44252ac776e7b	Patch
https://git.kernel.org/stable/c/0f85a9655445e67bb0238cfc983d7c383b54938e	Patch
https://git.kernel.org/stable/c/36bd7d5deef936c4e1e3cd341598140e5c14c1d3	Patch
https://git.kernel.org/stable/c/6496fb830cbb741d831225cc4e7e5601c6e42970	Patch
https://git.kernel.org/stable/c/84b932bc9899d43e5829e6cf088b72d73a922b2b	Patch
https://git.kernel.org/stable/c/ba8d8429e5d6c36f9a654d2b96b9e043c43d92b4	Patch
https://git.kernel.org/stable/c/d68994e37ac3b285692559776e0279a88a3b5f8d	Patch
https://git.kernel.org/stable/c/d8a522085d09b30aba1016daf1dddac37c0f0285	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::::::::

History

11 Nov 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: net: wan/fsl_ucc_hdlc: Corrección de dma_free_coherent() en uhdlc_memclean() Los priv -> rx_buffer y priv -> tx_buffer se asignan juntos como búferes contiguos en uhdlc_init() pero se liberan como dos búferes en uhdlc_memclean(). Cambiar la limpieza para llamar a dma_free_coherent() solo una vez en todo el búfer.

Information

Published : 2026-05-06 12:16

Updated : 2026-11-11 21:10

NVD link : CVE-2026-43149

Mitre link : CVE-2026-43149

CVE.ORG link : CVE-2026-43149

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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