From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793829183; b=M1g8WtTlt10qGx0GRt2te6jqT9sF7kIOkg6+lYdYk6sYs6GvS5qgcB2UhE8bu59cvmF/ XjU7c8+DJlmEYL/MueTM54m9+4gMS0PDGKZXjbGuTqmXKsRmD5Fy/OVIup2vsBEaoyHGe jjH988hvEK7sKdAiIy0e20iAZ6aXLQv/yDnK20/aMoX68iYjoqL9w/7FqkmqC9fHTSi0a dt0frhGKXZ/1emO1XrH46dBN1H90ryZyt6ZucCrk1OEAHOSU6Z5sH83y9z6tVFjoJpawF LhdGmKpJbf/wjqJk8RvC/qf4ETkdfnXYPyQI1erSgrHwjCv01pTT40I7XQiR9GwF8rw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793829183; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=aKyonGnIke5DszEkXa3pbohOKVrGW8Ebzd49HULNBCA=; b=sFennjODV6kJSRzxvrT7VXKId/kelKlssTZ0yhNJMcwCO9OwYWgmeViTsnTGgUV7n7F1 lYlG+kP6XgZKKmXL/zBLHHAGce9kwD9OMb9MH5F3PTnzQ36fH1toqM/Epa6aa1jOjWsp3 kNNVBolcKV/UAqgRS7payvL5e3GDUzKTfTynpd1Hx+JOS40QkmnaNub+IEtdV4KMYMSpf 0YWtqcg+UQL/bd/VVoFGcZBmbLzhzSZv3G2h7/qc3BdmWi8Sbu15nQpCDlsiYVonpYOiH akrm7Ur1imJzQQabM//FVTt4DQIbu8kV56Xh+OXVWcFBVY8NwLuZLJ9K17SP+xX71tA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=nS72Cj+D; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DA392606D806; Wed, 4 Nov 2026 21:53:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=nS72Cj+D Received: by smtp.kernel.org (Postfix) with ESMTPSA id 460801F000C1; Wed, 4 Nov 2026 21:53:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793829182; bh=aKyonGnIke5DszEkXa3pbohOKVrGW8Ebzd49HULNBCA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=nS72Cj+Df4LVBFx6oLXCKELNgKqCV3xl/z/iSIauh7tWARiGV6vT/YwCCPbesqFnj mPN9rDIWf0UTZ6EPMOznaPJIZpLDpxsTfk1Y32myYRG9+jUTKp4w/trqVKJSOHmIUt 3OS1c8DAAMvsJDItGVhfZIbE5nQd3k5/X+DHPvhk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiale Yao , Jiri Kosina Subject: [PATCH 7.3 498/547] HID: pxrc: reject short input reports Date: Wed, 4 Nov 2026 16:11:22 -0500 Message-ID: <20261104211052.528988519@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261104211038.406938024@linuxfoundation.org> References: <20261104211038.406938024@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao commit 0deb22da5a8c6663c3e071f55fd7d7e3189f5517 upstream. The HID core invokes raw_event callbacks before validating the report length. pxrc_raw_event() reads byte seven and writes bytes one and seven without checking that the report contains those bytes. A one-byte input report reproduced the first invalid access under KASAN: BUG: KASAN: slab-out-of-bounds in pxrc_raw_event+0x161/0x260 Read of size 1 by task hidtrigger/90 Call Trace: pxrc_raw_event+0x161/0x260 kasan_report+0x139/0x170 Require all eight bytes before reading or rewriting the report. Commit 47669bec44fe ("HID: asus: refactor the two workqueues and init sequence") added the same kind of raw_event length validation to hid-asus. Fixes: acc3e34613da ("HID: Add driver for PhoenixRC Flight Controller") Cc: stable@vger.kernel.org Signed-off-by: Jiale Yao Signed-off-by: Jiri Kosina Signed-off-by: Greg Kroah-Hartman --- drivers/hid/hid-pxrc.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/hid/hid-pxrc.c +++ b/drivers/hid/hid-pxrc.c @@ -55,6 +55,9 @@ static int pxrc_raw_event(struct hid_dev { struct pxrc_priv *priv = hid_get_drvdata(hdev); + if (size < 8) + return 0; + if (priv->alternate) priv->slider = data[7]; else