From: Nathan Rebello <nathan.c.rebello@gmail.com>
To: gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, heikki.krogerus@linux.intel.com,
Nathan Rebello <nathan.c.rebello@gmail.com>
Subject: Re: [PATCH 1/2] usb: typec: ucsi: validate connector number in ucsi_connector_change()
Date: Fri, 20 Feb 2026 01:34:04 -0500 [thread overview]
Message-ID: <20260220063405.3623-1-nathan.c.rebello@gmail.com> (raw)
In-Reply-To: <20260219164925.3249-2-nathan.c.rebello@gmail.com>
After. ucsi_connector_change() is only called via ucsi_notify_common(),
which processes CCI interrupts from a bound device. The connector number
comes from the CCI register (UCSI_CCI_CONNECTOR), a 7-bit field that
can return 1-127, while the connector array is allocated based on
num_connectors (typically 2-4). The same register is already validated
for other fields in ucsi_init() (line 1840: "This is out of spec but
happens in buggy FW").
Nathan
next prev parent reply other threads:[~2026-02-20 6:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-19 16:49 [PATCH 0/2] usb: typec: ucsi: fix input validation in UCSI core Nathan Rebello
2026-02-19 16:49 ` [PATCH 1/2] usb: typec: ucsi: validate connector number in ucsi_connector_change() Nathan Rebello
2026-02-20 6:09 ` Greg KH
2026-02-20 6:34 ` Nathan Rebello [this message]
2026-02-20 6:53 ` Greg KH
2026-03-11 13:10 ` Greg KH
2026-03-11 21:49 ` Nathan Rebello
2026-03-12 5:03 ` Greg KH
2026-03-12 5:44 ` Nathan Rebello
2026-02-19 16:49 ` [PATCH 2/2] usb: typec: ucsi: clamp returned length in ucsi_run_command() Nathan Rebello
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