From: Jens Axboe <axboe@kernel.dk>
To: Kees Cook <keescook@chromium.org>
Cc: Jeffrin Jose T <jeffrin@rajagiritech.edu.in>,
linux-kernel@vger.kernel.org,
Dan Carpenter <dan.carpenter@oracle.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Steven Rostedt <rostedt@goodmis.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
tobin@kernel.org, Dmitry Vyukov <dvyukov@google.com>,
Alexander Potapenko <glider@google.com>,
Tejun Heo <tj@kernel.org>
Subject: Re: [PATCH v2] libata: zpodd: Fix small read overflow in zpodd_get_mech_type()
Date: Mon, 29 Jul 2019 15:55:40 -0600 [thread overview]
Message-ID: <3e515b31-0779-4f65-debf-49e462f9cd25@kernel.dk> (raw)
In-Reply-To: <201907291442.B9953EBED@keescook>
On 7/29/19 3:47 PM, Kees Cook wrote:
> Jeffrin reported a KASAN issue:
>
> BUG: KASAN: global-out-of-bounds in ata_exec_internal_sg+0x50f/0xc70
> Read of size 16 at addr ffffffff91f41f80 by task scsi_eh_1/149
> ...
> The buggy address belongs to the variable:
> cdb.48319+0x0/0x40
>
> Much like commit 18c9a99bce2a ("libata: zpodd: small read overflow in
> eject_tray()"), this fixes a cdb[] buffer length, this time in
> zpodd_get_mech_type():
>
> We read from the cdb[] buffer in ata_exec_internal_sg(). It has to be
> ATAPI_CDB_LEN (16) bytes long, but this buffer is only 12 bytes.
Applied, thanks.
--
Jens Axboe
next prev parent reply other threads:[~2019-07-29 21:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-29 21:47 [PATCH v2] libata: zpodd: Fix small read overflow in zpodd_get_mech_type() Kees Cook
2019-07-29 21:55 ` Jens Axboe [this message]
2019-07-29 21:58 ` Nick Desaulniers
2019-07-29 22:00 ` Jens Axboe
2019-07-30 4:27 ` Kees Cook
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