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Not yet scoredPublished Jul 19, 2026

CVE-2026-63959usb: typec: tcpm/tcpci_maxim: validate header NDO against RX_BYTE_CNT

Updated under an hour ago ()

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It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS
Not yet scored
Weakness (CWE)
Not given
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Linux
NVD analysis
Awaiting Analysis
Record last updated
Jul 20, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Linux Linux
linux:linux (from the name)
6f413b559f86a2894188e082e389ff95ee428345 builds before 0af00f1459f5dd757f0d392f8caa38039561ac62; from 6f413b559f86a2894188e082e389ff95ee428345 before dc17721d42e6d89f63572e63add8306a0e15eb3c; from 6f413b559f86a2894188e082e389ff95ee428345 before 9b496e3371c04f0a03b7faa5d2442536d00e3998; from 6f413b559f86a2894188e082e389ff95ee428345 before c4ab8e2d4432abb646c5c0687f8dab173da901f9; from 6f413b559f86a2894188e082e389ff95ee428345 before aa2f716327be1818e1cb156da8a2844804aaec2f
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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