linux-kernel - Re: [PATCH V2] usb: common: ulpi: Fix crash in ulpi

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 18 Jan 2022 09:02:36 +0000
From:   Jon Hunter <jonathanh@...dia.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH V2] usb: common: ulpi: Fix crash in ulpi_match()


On 17/01/2022 15:40, Greg KH wrote:
> On Mon, Jan 17, 2022 at 03:00:39PM +0000, Jon Hunter wrote:
>> Commit 7495af930835 ("ARM: multi_v7_defconfig: Enable drivers for
>> DragonBoard 410c") enables the CONFIG_PHY_QCOM_USB_HS for the ARM
>> multi_v7_defconfig. Enabling this Kconfig is causing the kernel to crash
>> on the Tegra20 Ventana platform in the ulpi_match() function.
>>
>> The Qualcomm USB HS PHY driver that is enabled by CONFIG_PHY_QCOM_USB_HS,
>> registers a ulpi_driver but this driver does not provide an 'id_table',
>> so when ulpi_match() is called on the Tegra20 Ventana platform, it
>> crashes when attempting to deference the id_table pointer which is not
>> valid. The Qualcomm USB HS PHY driver uses device-tree for matching the
>> ULPI driver with the device and so fix this crash by using device-tree
>> for matching if the id_table is not valid.
>>
>> Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
>> Signed-off-by: Jon Hunter <jonathanh@...dia.com>
> 
> No cc: of stable since this is a bug going back to 4.11?


Yes good point.

Heikki, let me know if you want me to resend or if you can add the 
stable tag?

Cheers
Jon

-- 
nvpublic