CVE-2026-98759
Description
In the Linux kernel, the following vulnerability has been resolved: usb: typec: tipd: fix uninitialized typec_partner_desc in cd321x_update_work() cd321x_update_work() passes a stack-allocated typec_partner_desc to typec_register_partner() after initializing only usb_pd, accessory and identity. typec_register_partner() copies attach and deattach from the descriptor into the partner. With those fields left unset, garbage function pointers may be stored and later invoked from typec_partner_link_device() when a USB device is linked to the port. Uninitialized pd_revision and usb_capability similarly leak stack data through partner sysfs. Zero-initialize the descriptor so optional callbacks remain NULL and the remaining fields are zero.
How to fix
- Linux Linux75dc6cb377efd2f4428b7f76d3a590a0bbc10399, 5414144e202a32437e3eb436cd3f5f00d79ad86e, 88c7e458af53ff781a3f1051708395892b325576 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 82432bbfb9e83b7e81d04660fe129b99a29b2ac2 ≤ v < 75dc6cb377efd2f4428b7f76d3a590a0bbc10399, 82432bbfb9e83b7e81d04660fe129b99a29b2ac2 ≤ v < 5414144e202a32437e3eb436cd3f5f00d79ad86e, 82432bbfb9e83b7e81d04660fe129b99a29b2ac2 ≤ v < 88c7e458af53ff781a3f1051708395892b325576, 6.18 | 75dc6cb377efd2f4428b7f76d3a590a0bbc10399, 5414144e202a32437e3eb436cd3f5f00d79ad86e, 88c7e458af53ff781a3f1051708395892b325576 |
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