{"cve":"CVE-2026-63958","nvd":{"published":"2026-07-19T16:17:14.667","modified":"2026-10-30T14:32:03.687","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: validate connector number in ucsi_connector_change()\n\nThe connector number in a UCSI CCI notification is a 7-bit field\nsupplied by the PPM.  ucsi_connector_change() uses it to index the\nucsi->connector[] array without checking it against the number of\nconnectors the PPM reported at init time, so a buggy or malicious PPM\n(EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /\nglink transports) can drive schedule_work() on memory past the end of\nthe array.\n\nReject connector numbers that are zero or exceed cap.num_connectors\nbefore dereferencing the array.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/0edd1e21587b0483c7ceb993b9fb9668bbef7433","https://git.kernel.org/stable/c/156b6f0aec6108909b0c4aedc78865b12766b347","https://git.kernel.org/stable/c/288a81a8507052bcfbf884d39a463c44c42c5fd9","https://git.kernel.org/stable/c/5af2719b460ab904c504fc069d1dd2a3aa2b22b0","https://git.kernel.org/stable/c/bd24d92af4ae021b6209f28e9a57e1bf2260d4fd"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-30T14:49:48.263840089+00:00"},"epss":{"cve":"CVE-2026-63958","score":0.00211,"percentile":0.11453,"date":"2026-10-30"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}