netdev - Re: [PATCH] NFC: nxp-nci: Fix NULL pointer dereference after I2C communication error

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] [day] [month] [year] [list]

Date:   Mon, 11 Nov 2019 21:42:30 -0800 (PST)
From:   David Miller <davem@...hat.com>
To:     stephan@...hold.net
Cc:     clement.perrochaud@...innov.com, charles.gorand@...innov.com,
        linux-nfc@...ts.01.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, andriy.shevchenko@...ux.intel.com,
        sedat.dilek@...dativ.de
Subject: Re: [PATCH] NFC: nxp-nci: Fix NULL pointer dereference after I2C
 communication error

From: Stephan Gerhold <stephan@...hold.net>
Date: Sun, 10 Nov 2019 17:19:15 +0100

> I2C communication errors (-EREMOTEIO) during the IRQ handler of nxp-nci
> result in a NULL pointer dereference at the moment:
 ...
> Change the code to call only nxp_nci_fw_recv_frame() in case of an error.
> Make sure to log it so it is obvious that a communication error occurred.
> The error above then becomes:
> 
>     nxp-nci_i2c i2c-NXP1001:00: NFC: Read failed with error -121
>     nci: __nci_request: wait_for_completion_interruptible_timeout failed 0
>     nxp-nci_i2c i2c-NXP1001:00: NFC: Read failed with error -121
> 
> Fixes: 6be88670fc59 ("NFC: nxp-nci_i2c: Add I2C support to NXP NCI driver")
> Signed-off-by: Stephan Gerhold <stephan@...hold.net>

Applied and queued up for -stable.