CVE-2026-63959 - Vulnerability Details - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT A broken/malicious port can transmit a CRC-valid frame whose header advertises up to seven data objects but whose body carries fewer than that. Check for this, and rightfully reject the message, instead of reading from uninitialized stack memory.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.002.

Key SSVC decision points have not yet been added.

Vendors	Products
Linux	Linux Kernel

No data.

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References

Link	Providers
https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62
https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998
https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f
https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9
https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c

History

Sun, 19 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT A broken/malicious port can transmit a CRC-valid frame whose header advertises up to seven data objects but whose body carries fewer than that. Check for this, and rightfully reject the message, instead of reading from uninitialized stack memory.
Title		usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0af00f1459f5dd757f0d392f8caa38039561ac62 https://git.kernel.org/stable/c/9b496e3371c04f0a03b7faa5d2442536d00e3998 https://git.kernel.org/stable/c/aa2f716327be1818e1cb156da8a2844804aaec2f https://git.kernel.org/stable/c/c4ab8e2d4432abb646c5c0687f8dab173da901f9 https://git.kernel.org/stable/c/dc17721d42e6d89f63572e63add8306a0e15eb3c

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-07-19T14:55:49.553Z

Updated: 2026-07-20T06:41:39.202Z

Reserved: 2026-07-19T07:54:57.023Z

Link: CVE-2026-63959

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

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