From nobody Mon Jun 15 03:56:04 2026 Received: from cstnet.cn (smtp21.cstnet.cn [159.226.251.21]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F2E002882B4; Wed, 8 Apr 2026 03:10:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775617860; cv=none; b=t2OEGO+Q7UbRssNpw7y46hOODi36fqTg+ULFfDpmnjulM55GXgmK+OgfD6gGX6Cr4+gYf3wGDuMnnVCn2GenyYSuKXoF3EdgV5m4AmFT9M9XRzIF2Urtf54jFbbyZCf1TFEFS/FplfaxFjjnoZtK/LgGe+i43RVIcfu3Yu2OElo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775617860; c=relaxed/simple; bh=VaBGZ1QXqRg76zaGf8gaHSUdkNpNvxf0g9jxhu1rBco=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=PNjNZ8HYwvgqhkDDBR31+Yu0Z0JHtRbDlIBeKFm73icv88zGyiW2q8pWqPlfz40zyWNadJ4ByuO08hB+PwvO6MNTF945WuMvWXXG8bqvrO/8AHXwsx+SpgobKzsGPCxaAsivP9GYxVWVD1jEd5DnQBvZOKSVdrNQu4flD74GIQo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [124.16.138.129]) by APP-01 (Coremail) with SMTP id qwCowACXQm4yx9Vp3iqWDA--.31904S2; Wed, 08 Apr 2026 11:10:42 +0800 (CST) From: Wentao Liang To: Georgi Djakov , Shawn Guo , Sascha Hauer Cc: Pengutronix Kernel Team , Fabio Estevam , linux-pm@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] interconnect: imx: fix use-after-free in imx_icc_node_init_qos() Date: Wed, 8 Apr 2026 03:10:04 +0000 Message-Id: <20260408031004.309483-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qwCowACXQm4yx9Vp3iqWDA--.31904S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtw1UZr4rGr18Cw4kWrW8tFb_yoWkJwc_uF 18uFZrXF48CF40gwsIyr1fZFyqyw1I9ws3ZF1jqF93t34qvrsxXrsIqw4DZ3y8Xr4Ut34U Grn0vFn8Zry7CjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbTkFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxa n2IY04v7MxkF7I0En4kS14v26r1q6r43MxkIecxEwVAFwVW8GwCF04k20xvY0x0EwIxGrw CFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE 14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2 IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxK x2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI 0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JU-a9-UUUUU= X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBgwLA2nVmXqrYwAAsV Content-Type: text/plain; charset="utf-8" Move of_node_put(dn) after the last use of dn, and add a missing put in the error path to avoid both use-after-free and reference leak. Fixes: f0d8048525d7 ("interconnect: Add imx core driver") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/interconnect/imx/imx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/interconnect/imx/imx.c b/drivers/interconnect/imx/imx.c index 9511f80cf041..75431b5ccef8 100644 --- a/drivers/interconnect/imx/imx.c +++ b/drivers/interconnect/imx/imx.c @@ -143,15 +143,16 @@ static int imx_icc_node_init_qos(struct icc_provider = *provider, } =20 pdev =3D of_find_device_by_node(dn); - of_node_put(dn); if (!pdev) { dev_warn(dev, "node %s[%d] missing device for %pOF\n", node->name, node->id, dn); + of_node_put(dn); return -EPROBE_DEFER; } node_data->qos_dev =3D &pdev->dev; dev_dbg(dev, "node %s[%d] has device node %pOF\n", node->name, node->id, dn); + of_node_put(dn); } =20 return dev_pm_qos_add_request(node_data->qos_dev, --=20 2.34.1