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 0B4283FF1DA; Fri, 15 May 2026 15:54:32 +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=1778860472; cv=none; b=pFOkFO8ODgp1oIzsIV3aUCRCoUB87QubHN7nlAC4Iacig/mmuLx4exwS666fS5trTX2PlQXtDdmZMzlKbO/esqu93Z0ozKObje8OySd4LJpcliGrTZDxzOOmRSh5ZzJfpBxTTq8couzaCLlNi9oQjhfWBcMz64ANLhkaqiGJqM4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778860472; c=relaxed/simple; bh=N34cZGrpqKHG7w/IjlzadoJ/m7uJ6VRK1OcXRHx0R78=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CZ6knhfzkMUCb5rfeh/qOvYCCrVLPUdcem5FXtVhvQvdna2y61xhzAqHOX1QXhpWUQb+SEbDWLsJIG1lw5gDVzUXAtb/uZlOClQN34nPYS8aWnlgtyDhxfQ0ytk2ZBwgIBxbZOaYZ2VTv3vQPF5fdjGk8HEdu19zGjXyAdSU/8I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QTTiU1+T; 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="QTTiU1+T" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93202C2BCB0; Fri, 15 May 2026 15:54:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778860471; bh=N34cZGrpqKHG7w/IjlzadoJ/m7uJ6VRK1OcXRHx0R78=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QTTiU1+TfQwUCXabz6wDsXZSZ/MWbrvObqHQU3JCsb0zGs1L+WFT1jWENPxiD5Fqg MIu2lPyYqWRIOFHAwxcqyOcbE+dJ/tHcNyvIMA7fuJUuSGp8g2SheG7/VGcb1TYnun sdUY7HtasN5pJ8mN5DsKH49IXhG0JQfDtF6Qzebs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable@kernel.org, Sven Eckelmann Subject: [PATCH 6.12 100/144] batman-adv: bla: put backbone reference on failed claim hash insert Date: Fri, 15 May 2026 17:48:46 +0200 Message-ID: <20260515154655.820659571@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260515154653.469907118@linuxfoundation.org> References: <20260515154653.469907118@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sven Eckelmann commit ba9d20ee9076dac32c371116bacbe72480eb356c upstream. When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object. Cc: stable@kernel.org Fixes: 3db0decf1185 ("batman-adv: Fix non-atomic bla_claim::backbone_gw access") Signed-off-by: Sven Eckelmann Signed-off-by: Greg Kroah-Hartman --- net/batman-adv/bridge_loop_avoidance.c | 1 + 1 file changed, 1 insertion(+) --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -723,6 +723,7 @@ static void batadv_bla_add_claim(struct if (unlikely(hash_added != 0)) { /* only local changes happened. */ + batadv_backbone_gw_put(backbone_gw); kfree(claim); return; }