From: Benjamin Tissoires <bentiss@kernel.org>
To: jikos@kernel.org, Trung Nguyen <trungnh@cystack.net>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org
Subject: Re: [PATCH 1/2] HID: multitouch: fix out-of-bounds bit access on mt_io_flags
Date: Wed, 01 Jul 2026 21:12:14 +0200 [thread overview]
Message-ID: <178293313430.4023988.4170644137345282702.b4-ty@b4> (raw)
In-Reply-To: <20260701171320.16367-1-trungnh@cystack.net>
On Thu, 02 Jul 2026 00:13:19 +0700, Trung Nguyen wrote:
> mt_io_flags is a single unsigned long, but mt_process_slot(),
> mt_release_pending_palms() and mt_release_contacts() use it as a
> per-slot bitmap indexed by the slot number. That slot number is only
> bounded by td->maxcontacts, which is taken from the device's
> ContactCountMaximum feature report and can be up to 255, not by
> BITS_PER_LONG.
>
> [...]
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git (for-7.2/upstream-fixes), thanks!
[1/2] HID: multitouch: fix out-of-bounds bit access on mt_io_flags
https://git.kernel.org/hid/hid/c/8813b0612275
[2/2] selftests/hid: multitouch: test a large ContactCountMaximum
https://git.kernel.org/hid/hid/c/b6eb022890c7
Cheers,
--
Benjamin Tissoires <bentiss@kernel.org>
prev parent reply other threads:[~2026-07-01 19:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAO-hwJLS6uAX__aGkmpcDQ8v6GJaHGrL+TOYXVRX6jvjzNW+wg@mail.gmail.com>
2026-07-01 17:13 ` Trung Nguyen
2026-07-01 17:13 ` [PATCH 2/2] selftests/hid: multitouch: test a large ContactCountMaximum Trung Nguyen
2026-07-01 19:12 ` Benjamin Tissoires [this message]
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