Not yet scoredPublished Jul 19, 2026

CVE-2026-63963usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers

Updated under an hour ago (Oct 28, 2026, 7:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers Properly validate the count passed from a device when calling svdm_consume_identity() or svdm_consume_identity_sop_prime() as the device-controlled value could index off of the static arrays, which could leak data.

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: Undergoing Analysis
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from f0690a25a140b853b1842fa80faf828601bb47e8 before 6bacd22e1eae77abf089bbdc016270200a8dc83b; from f0690a25a140b853b1842fa80faf828601bb47e8 before 569f7971542eb10025d8a0989b83f28a29d8ba20; from f0690a25a140b853b1842fa80faf828601bb47e8 before f9d787fbe83127105e42088cca40e5118db0d810; from f0690a25a140b853b1842fa80faf828601bb47e8 before ed8649f3822e211d025bcab5158af6f8a38c8705; from f0690a25a140b853b1842fa80faf828601bb47e8 before 8fbc349e8383125dd2d8de1c1e926279d398ab17	CNA record

References

References

https://git.kernel.org/stable/c/6bacd22e1eae77abf089bbdc016270200a8dc83b
https://git.kernel.org/stable/c/569f7971542eb10025d8a0989b83f28a29d8ba20
https://git.kernel.org/stable/c/f9d787fbe83127105e42088cca40e5118db0d810
https://git.kernel.org/stable/c/ed8649f3822e211d025bcab5158af6f8a38c8705
https://git.kernel.org/stable/c/8fbc349e8383125dd2d8de1c1e926279d398ab17

The CVE record on cve.org NVD's entry

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.