Bug 2502410 (CVE-2026-63961) - CVE-2026-63961 kernel: usb: typec: altmodes/displayport: validate count before reading Status Update VDO
Summary: CVE-2026-63961 kernel: usb: typec: altmodes/displayport: validate count befor...
Keywords:
Status: NEW
Alias: CVE-2026-63961
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 16:06 UTC by OSIDB Bzimport
Modified: 2026-07-21 22:54 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-19 16:06:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

usb: typec: altmodes/displayport: validate count before reading Status Update VDO

A broken/malicious device can send the incorrect count for a status
update VDO, which will cause the kernel to read uninitialized stack data
and send it off elsewhere.

Fix this up by correctly verifying the count for the update object.
Comment 1 Keith Grant 2026-07-21 22:53:42 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071957-CVE-2026-63961-a5e6@gregkh/T
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