usb: typec: ucsi: validate connector number in ucsi_connector_change() (Linux Linux)

CVE-2026-63958
MEDIUM 5.5

En bref

Source
NVD
EPSS
EPSS 0.16 % · centile 5 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

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.

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < cea949203faef9cb783adc7b978cce056271e057 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 156b6f0aec6108909b0c4aedc78865b12766b347 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < bd24d92af4ae021b6209f28e9a57e1bf2260d4fd ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 0edd1e21587b0483c7ceb993b9fb9668bbef7433 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 5af2719b460ab904c504fc069d1dd2a3aa2b22b0 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 288a81a8507052bcfbf884d39a463c44c42c5fd9
Linux · Linuxaffected 4.13 ; unaffected 0 < 4.13 ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.* ; unaffected 6.12.93 ≤ 6.12.* ; unaffected 6.18.35 ≤ 6.18.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD