CVE-2026-63958

CVE CVE-2026-63958EUVD EUVD-2026-45731Published 2026-07-19T14:55:48.000ZLast changed 2026-07-20T06:41:38.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: validate connector number in ucsi_connector_change() The connector number in a UCSI CCI notification is a 7-bit field supplied by the PPM. ucsi_connector_change() uses it to index the ucsi->connector[] array without checking it against the number of connectors the PPM reported at init time, so a buggy or malicious PPM (EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 / glink transports) can drive schedule_work() on memory past the end of the array. Reject connector numbers that are zero or exceed cap.num_connectors before dereferencing the array.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.0.12; patch: 0; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <cea949203faef9cb783adc7b978cce056271e057; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <bd24d92af4ae021b6209f28e9a57e1bf2260d4fd; patch: 6.18.35; 4.13; patch: 6.12.93; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <5af2719b460ab904c504fc069d1dd2a3aa2b22b0; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <156b6f0aec6108909b0c4aedc78865b12766b347; patch: 6.1.176; patch: 7.1; patch: 6.6.143; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <0edd1e21587b0483c7ceb993b9fb9668bbef7433; c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f <288a81a8507052bcfbf884d39a463c44c42c5fd9

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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