What’s Vulnerable › Vulnerabilities

CVE-2026-98760: usb: typec: tipd: fix uninitialized typec_partner_desc in tps6598x_connect()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tipd: fix uninitialized typec_partner_desc in tps6598x_connect() tps6598x_connect() 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.

Affected products

• Linux: 4.15 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/282be6ae8be791762740107c79cecf5121f66063
• https://git.kernel.org/stable/c/4b6823ce0e548491cb9663303cba28e18d351096
• https://git.kernel.org/stable/c/72582e9bb721cd766ae333af8ebf90061dfefeaf
• https://git.kernel.org/stable/c/a39d53f70e637ff3970046c32106a0e64fca62cd
• https://git.kernel.org/stable/c/bab4210634be8e6d4181155d1b99106ad24cea70
• https://git.kernel.org/stable/c/c4b27b3605788bbf9e4251f3cd4ab94645ab036f
• https://git.kernel.org/stable/c/dac0c073c6ad5f1bbb5e9fea9023fc1b4dab5e14

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