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 61B2521E098; Sat, 30 May 2026 17:58:12 +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=1780163893; cv=none; b=uj+BB38CKbERNgF6OK8k0O5OdQVKpMsbVd+L9ENvXPBq7ytBeUhVl+CTJj8pzJ08z4Acryi5V/PNSkmQm/dbuWPD8W7jdMWjG0xdAKnrJYvWd4jhfQM7/RRt9FOKy53Arzk4nhwItpqkrJcZYA5X4qJpwjE8Ky7OqvfQz278R7Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780163893; c=relaxed/simple; bh=z52UjLNRVw/BsM+L3pCd5HNEu4jKVk6fuup0GDXfkX4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r1AeQlhi/Nzy00sak282jltrgzi9hAdyO7bqcqnAreR2XUOUyo2BThMa9ZKlwQH6YDr7HTrWDYs/cRa2Ep+Vw/UA0aaOazlMBrdU9/i8TPmphUYuTth3EVpuVh2P/DBYOcUV0jvMs0qPA64lSu6orJ3bNhF9YQ7ZHaenQLG6b9g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=UXwobqlp; 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="UXwobqlp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6572C1F00893; Sat, 30 May 2026 17:58:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780163892; bh=XrLC/EgkLJ9YFeTfnRHeyWrfTdLtex1iHlf7nGNhs5c=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UXwobqlpiNzcI0A8Deg3uVc2ljJqfk3TsMcQkQpBM4HcHjP7TEpjPfLdsu5/fL6kE pGNXYlBHP+AqDPWVNs9aHv8CPGtd6N224ayIYurCDxXQKUbRiJ5jnE3hLMVTEnxGMj UV/FwG+vg814K+gFz2IkxVrLH8S0EnYsWAgUoQNg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pei Xiao , Johan Hovold , Mark Brown Subject: [PATCH 5.15 364/776] spi: mpc52xx: fix use-after-free on unbind Date: Sat, 30 May 2026 18:01:18 +0200 Message-ID: <20260530160249.970881253@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160240.228940103@linuxfoundation.org> References: <20260530160240.228940103@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 706b3dc2ac7a998c55e14b3fd2e8f934c367e6e0 upstream. The state machine work is scheduled by the interrupt handler and therefore needs to be cancelled after disabling interrupts to avoid a potential use-after-free. Fixes: 984836621aad ("spi: mpc52xx: Add cancel_work_sync before module remove") Cc: stable@vger.kernel.org Cc: Pei Xiao Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260414134319.978196-5-johan@kernel.org Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- drivers/spi/spi-mpc52xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/spi/spi-mpc52xx.c +++ b/drivers/spi/spi-mpc52xx.c @@ -521,10 +521,11 @@ static int mpc52xx_spi_remove(struct pla struct mpc52xx_spi *ms = spi_master_get_devdata(master); int i; - cancel_work_sync(&ms->work); free_irq(ms->irq0, ms); free_irq(ms->irq1, ms); + cancel_work_sync(&ms->work); + for (i = 0; i < ms->gpio_cs_count; i++) gpio_free(ms->gpio_cs[i]);