From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 784E63EC805; Fri, 9 Oct 2026 14:34:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791556445; cv=none; b=eN22kPl5vjUjVKI7u3SWw/F0/tGJUKWW9MM++JcA8pOOcpwqV4a71sEI/yG3OBrAMIOsZk/oO2k0uAUdXeB3iRSOgELOnxv9T2CvBhxJxNwQFRiL9pQg2rR/KYY4mn+v789eiuFADWW3n3sJkAeeNkxKRy39iJ4Dajbof96cr10= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791556445; c=relaxed/simple; bh=486GHakO/XeOuToGY3JDbK6auu/YdEL2+nhinYqTX/c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=G3Dw7gv8E3MSawDr8oFpksngKUhQ04wJ+Gc/JcwnZIs4fnUvpqEPJwZ/3CrHs3IySgLXlC1/S03G4q9+i2Zyq/5NcUUMnfbSLxMgdQXLT7s8ltCRg+TIxGFxKmgLX+hk2r+/OvSAKINvt8sqGnqOeYUfNFmpiZTalixN3yJQ9es= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=fuTH28Df; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="fuTH28Df" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C4471F000FF; Fri, 9 Oct 2026 14:34:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1791556442; bh=rIeIdaJ3e+elqXmFXCrn3QnuapU+sfDe14vtAegaInA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fuTH28Dfxa4f7K694VERJ2f/67t1ITWOI8DVhQCwpS6ORoZ4TvqfbyHO3eGdn9bsF oWsWXdFa1JDRbjMWX1QJvuZ8x9zviTIVB83ZZ4uXTIQGbGN/mZc+Vv+HWK28eZGLDr usfP44WaJ8H5VhiFLoHfqXYnycun904PIUZBCafU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chandrashekar Devegowda , Luiz Augusto von Dentz Subject: [PATCH 6.18 234/403] Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame() Date: Fri, 9 Oct 2026 16:09:55 +0200 Message-ID: <20261009140957.631229496@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261009140952.119038291@linuxfoundation.org> References: <20261009140952.119038291@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chandrashekar Devegowda commit 7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea upstream. plen is u16 and computed as HDR_SIZE + dlen. For ACL/ISO frames dlen is a 16-bit field, so a value >= 0xFFFC wraps the sum, bypassing the "skb->len < plen" check and letting skb_trim() truncate the packet. Widen plen to u32 so the addition cannot wrap. Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport") Cc: stable@vger.kernel.org Signed-off-by: Chandrashekar Devegowda Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/btintel_pcie.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/bluetooth/btintel_pcie.c +++ b/drivers/bluetooth/btintel_pcie.c @@ -1116,7 +1116,7 @@ static int btintel_pcie_recv_frame(struc { int ret; u8 pkt_type; - u16 plen; + u32 plen; u32 pcie_pkt_type; void *pdata; struct hci_dev *hdev = data->hdev;