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CVE-2026-63958

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

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < cea949203faef9cb783adc7b978cce056271e057
Status affected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < 156b6f0aec6108909b0c4aedc78865b12766b347
Status affected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < bd24d92af4ae021b6209f28e9a57e1bf2260d4fd
Status affected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < 0edd1e21587b0483c7ceb993b9fb9668bbef7433
Status affected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < 5af2719b460ab904c504fc069d1dd2a3aa2b22b0
Status affected
Version c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f
Version < 288a81a8507052bcfbf884d39a463c44c42c5fd9
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 4.13
Status affected
Version 0
Version < 4.13
Status unaffected
Version <= 6.1.*
Version 6.1.176
Status unaffected
Version <= 6.6.*
Version 6.6.143
Status unaffected
Version <= 6.12.*
Version 6.12.93
Status unaffected
Version <= 6.18.*
Version 6.18.35
Status unaffected
Version <= 7.0.*
Version 7.0.12
Status unaffected
Version <= *
Version 7.1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.116
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/cea949203faef9cb783adc7b978cce056271e057
https://git.kernel.org/stable/c/156b6f0aec6108909b0c4aedc78865b12766b347
https://git.kernel.org/stable/c/bd24d92af4ae021b6209f28e9a57e1bf2260d4fd
https://git.kernel.org/stable/c/0edd1e21587b0483c7ceb993b9fb9668bbef7433
https://git.kernel.org/stable/c/5af2719b460ab904c504fc069d1dd2a3aa2b22b0
https://git.kernel.org/stable/c/288a81a8507052bcfbf884d39a463c44c42c5fd9