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 C6CC91CAB3; Fri, 9 Jan 2026 12:41:47 +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=1767962507; cv=none; b=YeqhCGX4tJ18IyX2zUxzwA/+aU/mt+zO70Thm2SdjzEfqKOhZKX6DxjEJTXFWW1Qr/bPl2yKvB5h7T39BDU5D1epXRTU0I1PT/3foU89fpoyVdWfY2XSXk58T/Vwcuxvkplfiv1ktZPuYduZyYbU4cloWFSPypWIgRsOLPvZ3WM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767962507; c=relaxed/simple; bh=JIFdScJo7rTVoiIY3WLOONdq+jWUpq2LmyV2YcA94Ko=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EUQ3I9jiqrb9gFoLMX92wmDCyxMi56CKQsHLebuL50jketWd/sfldjyyPUY4GWKWjQFmsIjmNtr/BLZylsB2pGrJARHHggeIWYlhFXDEYjXBVvC+9UewJSwG0eUAWqPtBgRO9z48nscs2eV5Y+AD0Hbec3SvNXN97OVZRXstxJM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=NOTfXcI1; 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="NOTfXcI1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 494F4C4CEF1; Fri, 9 Jan 2026 12:41:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767962507; bh=JIFdScJo7rTVoiIY3WLOONdq+jWUpq2LmyV2YcA94Ko=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NOTfXcI1ZA1wZVf0dx5/68q4o5dBTsKCaMzE6m9KQ98bfNMdJLK4vCgaVRRTUQRpj rJthHuxA+Rza8WlUflyJG5xFZOZrrF0ZcBXlL02pXarT0XtgNKEYI3514OfiFtaFoO t4+cAvTJqEyCddCgYwSfL9xB6is4oCZ8Yplj2+cA= 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 6.1 346/634] scsi: aic94xx: fix use-after-free in device removal path Date: Fri, 9 Jan 2026 12:40:24 +0100 Message-ID: <20260109112130.544329767@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112117.407257400@linuxfoundation.org> References: <20260109112117.407257400@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-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 @@ -897,6 +897,9 @@ 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 */