From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3F98532FA18; Mon, 29 Dec 2025 16:28:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025707; cv=none; b=LUlJFVoUqrHzqOIkAOnAx/bX0C0Uu2hfor1r7IrjPVo5CoGBH+k8o/QAI5tUXlRKktVLa3Dem3S1VoWOlSKjaaUChHhXass48V3qEJV8l+0BUYRX/9/Oh67Vpy7YdKZoRCJ/OPoWhE7/57jZJAPswYfr0BtFLLrxrioyXGpg8rk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025707; c=relaxed/simple; bh=p7A63HB/BKvFxmlNHPvjelsdS8PF+GZcYhHSbIBH1kg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e0Jzt1Qx+m9h5lL1FGT02zGdMjt8WkVf02LML+LdqBAJqBJL8TkaQTJ3s2VRA7iV5TnrghfUuwCUXLnbbaHdC9PXHmflBPeKYHIT2AnbLXnafszhH2RxC/dw/jSpxCOqKAt/onWRdjE7jZ5YK0vh8kGruAH5AYbptBZh7MH+Nic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bGvA0bBS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bGvA0bBS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B72FEC4CEF7; Mon, 29 Dec 2025 16:28:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767025707; bh=p7A63HB/BKvFxmlNHPvjelsdS8PF+GZcYhHSbIBH1kg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bGvA0bBS5Xe4LhCleXEZVdXc7oYsq7RDmpEPajNioq2Lj7U5yNYeqUhAxNT9cFgKH CnIwjpUE6K/QAmah9XP4DtXy13/+LDd3Dzpx+eIu6sLmk2r83jMMOI2OeufBU/Pz+l VfrIL5GMCC2HHDvdaVU30jQ+RYN7FODcC/FA0asQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yuhao Jiang , Junrui Luo , "Martin K. Petersen" Subject: [PATCH 6.18 307/430] scsi: aic94xx: fix use-after-free in device removal path Date: Mon, 29 Dec 2025 17:11:49 +0100 Message-ID: <20251229160735.632343756@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251229160724.139406961@linuxfoundation.org> References: <20251229160724.139406961@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: Junrui Luo commit f6ab594672d4cba08540919a4e6be2e202b60007 upstream. The asd_pci_remove() function fails to synchronize with pending tasklets before freeing the asd_ha structure, leading to a potential use-after-free vulnerability. When a device removal is triggered (via hot-unplug or module unload), race condition can occur. The fix adds tasklet_kill() before freeing the asd_ha structure, ensuring all scheduled tasklets complete before cleanup proceeds. Reported-by: Yuhao Jiang Reported-by: Junrui Luo Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver") Cc: stable@vger.kernel.org Signed-off-by: Junrui Luo Link: https://patch.msgid.link/ME2PR01MB3156AB7DCACA206C845FC7E8AFFDA@ME2PR01MB3156.ausprd01.prod.outlook.com Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/aic94xx/aic94xx_init.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/scsi/aic94xx/aic94xx_init.c +++ b/drivers/scsi/aic94xx/aic94xx_init.c @@ -882,6 +882,9 @@ static void asd_pci_remove(struct pci_de asd_disable_ints(asd_ha); + /* Ensure all scheduled tasklets complete before freeing resources */ + tasklet_kill(&asd_ha->seq.dl_tasklet); + asd_remove_dev_attrs(asd_ha); /* XXX more here as needed */