Bug 2502465 (CVE-2026-63963) - CVE-2026-63963 kernel: usb: typec: tcpm: validate VDO count in Discover Identity ACK handlers
Summary: CVE-2026-63963 kernel: usb: typec: tcpm: validate VDO count in Discover Ident...
Keywords:
Status: NEW
Alias: CVE-2026-63963
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 16:09 UTC by OSIDB Bzimport
Modified: 2026-07-21 11:12 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-19 16:09:36 UTC 
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.
Comment 1 Mauro Matteo Cascella 2026-07-21 11:10:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071958-CVE-2026-63963-56d2@gregkh/T
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