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 96A1B1C860B; Tue, 26 Aug 2025 12:58:52 +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=1756213132; cv=none; b=QXybZd+7fnwM6nVyn8wN/dwiHp7BEZdss6LcHfYDMEgiyFTmj1p5n/rFQKouOgaIVzIaBhGhSaCPiMaVxAUBGJwUexrZhJ2NRNLio2Aa9cKmNkQmp2ANFOtBNC75RduMag17lepuEGl+UxE4hi6H6s7au/Kd0BofwDARKGN2X2g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756213132; c=relaxed/simple; bh=FJ0axlwM966oBZQhpwT2TmO/35Dzqxq5O6TpY49YVC8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GA8C66jHMINd47WoMiBFRlwrO2WdQFILISUpvJ4mcxEqPnZy9n5qs8cICcOCnOAGkqy2k8hhvG1r+UZx938GuTrM23WLabrU5560nuIB3YmSUjjz2dc+y2TCkdREe5Sad3f6oVfyFFWWY49bdPoOPUbEWL80Fr9AIaaLp/YRH6o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QdpBjleK; 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="QdpBjleK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26323C4CEF1; Tue, 26 Aug 2025 12:58:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756213132; bh=FJ0axlwM966oBZQhpwT2TmO/35Dzqxq5O6TpY49YVC8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QdpBjleKjLZOr/75u1KRZLoJg5h2mmMdOUu5EM6nXYxJc9Lb0U5LzwYOjCun7/Y9O SS5K3U2d3qfK//sjv+jD+JY7iI46T+K3xE7YhPNlH0eNdfZJsTApRUoEnS8L9igggn CvE3GgGjnUXkhoV6TjsQnSGvgvxrA2J8ncveA/BY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, jackysliu <1972843537@qq.com>, "Martin K. Petersen" , Sasha Levin Subject: [PATCH 6.6 234/587] scsi: bfa: Double-free fix Date: Tue, 26 Aug 2025 13:06:23 +0200 Message-ID: <20250826110958.885962637@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110952.942403671@linuxfoundation.org> References: <20250826110952.942403671@linuxfoundation.org> User-Agent: quilt/0.68 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: jackysliu <1972843537@qq.com> [ Upstream commit add4c4850363d7c1b72e8fce9ccb21fdd2cf5dc9 ] When the bfad_im_probe() function fails during initialization, the memory pointed to by bfad->im is freed without setting bfad->im to NULL. Subsequently, during driver uninstallation, when the state machine enters the bfad_sm_stopping state and calls the bfad_im_probe_undo() function, it attempts to free the memory pointed to by bfad->im again, thereby triggering a double-free vulnerability. Set bfad->im to NULL if probing fails. Signed-off-by: jackysliu <1972843537@qq.com> Link: https://lore.kernel.org/r/tencent_3BB950D6D2D470976F55FC879206DE0B9A09@qq.com Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/bfa/bfad_im.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c index a9d3d8562d3c..0ec76d1cb6fb 100644 --- a/drivers/scsi/bfa/bfad_im.c +++ b/drivers/scsi/bfa/bfad_im.c @@ -706,6 +706,7 @@ bfad_im_probe(struct bfad_s *bfad) if (bfad_thread_workq(bfad) != BFA_STATUS_OK) { kfree(im); + bfad->im = NULL; return BFA_STATUS_FAILED; } -- 2.39.5