From nobody Mon Jun 15 00:04:36 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (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 A03E33947BF; Tue, 7 Apr 2026 07:30:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775547044; cv=none; b=EtV4PLhD1Ns3KWACa/J/aaGKyN57dwmCk/Z51qAyHHkUBGvTXsn20x32UYDDkkHKKDQbWWXlMxmaEgzalVtyI5uLwU17K/YMEafvXp4Hpw3p7CwWdWYyV8txGEBpDrMcyEjy2iXaOfdl4EkFIYFFDrvorpRb8Dw14LUMOUDO5Wo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775547044; c=relaxed/simple; bh=9G2kRKEVG2jwjSqBHIeX9hHVMZ0g9+88Ofm1ap240EI=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=lynU5qnTfNAnWblgnRDiiTIcR9DYuTn/SQBns4zVnK3eNsvU/T0RHHrKsniT3nWEKlLWHPPYLTv0i5uezPYcSVPve3sadiad2y4ACgXg+DOn85SdU6Co17SY4mk86/i8ZmdVxgRgmAE+lJih08rX8wbAx12DNIlUY2mvLvJCB5s= 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=159.226.251.81 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-03 (Coremail) with SMTP id rQCowACXtt2WstRpzeY3DQ--.3821S2; Tue, 07 Apr 2026 15:30:30 +0800 (CST) From: Wentao Liang To: sre@kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] power: reset: linkstation-poweroff: fix use-after-free in the linkstation_poweroff_init() Date: Tue, 7 Apr 2026 07:30:25 +0000 Message-Id: <20260407073025.271865-1-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: rQCowACXtt2WstRpzeY3DQ--.3821S2 X-Coremail-Antispam: 1UD129KBjvdXoW7GrW8KF17Ar47Gr1xtryftFb_yoWDuwbEg3 s7GF92vFyUKF1DAws3Z3Z7Zr9Ikan3Wr4xZF10yrW7Cw13X34DJFs8XrnrJFnxX3yUXr98 JFZrJr45AF4xZjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbIAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s 1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0 cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8Jw ACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc7CjxVAaw2AFwI0_JF0_ Jw1lc2xSY4AK67AK6r4xMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI 8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AK xVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI 8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280 aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyT uYvjfUnzuWDUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiCQ4KA2nUV4e4pQABs- Content-Type: text/plain; charset="utf-8" Move of_node_put(dn) after the of_match_node() call, which still needs the node pointer. The node reference is correctly released after use. Fixes: e2f471efe1d6 ("power: reset: linkstation-poweroff: prepare for new d= evices") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/power/reset/linkstation-poweroff.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/reset/linkstation-poweroff.c b/drivers/power/res= et/linkstation-poweroff.c index 02f5fdb8ffc4..e56d75bfcc43 100644 --- a/drivers/power/reset/linkstation-poweroff.c +++ b/drivers/power/reset/linkstation-poweroff.c @@ -163,10 +163,10 @@ static int __init linkstation_poweroff_init(void) dn =3D of_find_matching_node(NULL, ls_poweroff_of_match); if (!dn) return -ENODEV; - of_node_put(dn); =20 match =3D of_match_node(ls_poweroff_of_match, dn); cfg =3D match->data; + of_node_put(dn); =20 dn =3D of_find_node_by_name(NULL, cfg->mdio_node_name); if (!dn) --=20 2.34.1