CVE-2026-63959

usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT

published July 19, 2026

CVSS
—
EPSS
0%
Percentile
10.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00206 · 10.0th percentile
Published
2026-07-19T14:55Z
EPSS history
Timeline
  • 19 JUL 14:55Z
    usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT
    cvelistv5