CVE-2026-63963
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.
Affected versions
Linux kernel versions
4.12
and later are affected. Fixed in
6.12.93,
6.18.35,
7.0.12,
7.1
and their respective stable series.
References
4 totalFrequently asked questions
-
What is CVE-2026-63963?
CVE-2026-63963 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.12 onward and has been patched in 6.12.93, 6.18.35, 7.0.12 and others. CVE-2026-63963 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-63963?
Yes. CVE-2026-63963 has been patched. Fixed versions include 6.12.93, 6.18.35, 7.0.12 and others. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-63963 actively exploited?
No. CVE-2026-63963 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.