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 1209415C83 for ; Mon, 5 Dec 2022 19:34:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81544C433D6; Mon, 5 Dec 2022 19:34:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670268859; bh=2dBe2TeArxWYPIgUREUaY4xvRopIreNYXbAQ/G6JD5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t1K6zvPLR7zBHwjRkre3HcE/94660qKvO5e+/TGTT/7KaOz5AUIAg/fQBiiT0MhSP AJ2Mlk4bX/lOER5fkjrmOo+iwrEgltg8Mr0PyUqI0gC8EFsFpQusjMoBfdcJ80FxSk d4GkuvmkOahFeY422hQlC4pP1XcPpgRFEKa8TZhk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Roi Dayan , Maor Dickman , Saeed Mahameed , Sasha Levin Subject: [PATCH 5.15 037/120] net/mlx5e: Fix use-after-free when reverting termination table Date: Mon, 5 Dec 2022 20:09:37 +0100 Message-Id: <20221205190807.662764489@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221205190806.528972574@linuxfoundation.org> References: <20221205190806.528972574@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Roi Dayan [ Upstream commit 52c795af04441d76f565c4634f893e5b553df2ae ] When having multiple dests with termination tables and second one or afterwards fails the driver reverts usage of term tables but doesn't reset the assignment in attr->dests[num_vport_dests].termtbl which case a use-after-free when releasing the rule. Fix by resetting the assignment of termtbl to null. Fixes: 10caabdaad5a ("net/mlx5e: Use termination table for VLAN push actions") Signed-off-by: Roi Dayan Reviewed-by: Maor Dickman Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- .../net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c index 8f86b62e49e3..1b417b1d1cf8 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_termtbl.c @@ -309,6 +309,8 @@ mlx5_eswitch_add_termtbl_rule(struct mlx5_eswitch *esw, for (curr_dest = 0; curr_dest < num_vport_dests; curr_dest++) { struct mlx5_termtbl_handle *tt = attr->dests[curr_dest].termtbl; + attr->dests[curr_dest].termtbl = NULL; + /* search for the destination associated with the * current term table */ -- 2.35.1