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 D3FE819E992; Tue, 12 Nov 2024 10:48:26 +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=1731408507; cv=none; b=XohOeDB6MyULg0rVJskTd2Vfk3MgA0+sf0tNrfeb6+GjkQNbEXs0pFRn7MHK2MbXBBbm5q3nQjPmvb8eiMeVeVPiAi9qGlKDIWqDuNnD4XSLez+ru0Tm9aIWFjKlrojmapQzbcgpjolbz+2PnQsmLeCdAYAxwFd1xtMUeMyhlts= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731408507; c=relaxed/simple; bh=Eu4u+XjRhHRBcsdPX2n38zDPOuVHUJ9FIimTmlAgrEI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hs2dfFkCdJsTH+XpFpCcMJ4eZv88ExrRnmrXqLzdgGmxBWSvHk+3uvXNCvbon1XvDRWCxgdWEVRMXFksAFcFGRBaSk6mDlPpXmFWa6CNfVtlp0xbVZXCkD7GCrar2mw5616jBiZ/GxCNV+BE0ent2YlV4mYsKC1spglQy/ZS1O8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=rjo+t3t3; 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="rjo+t3t3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 44CD5C4CECD; Tue, 12 Nov 2024 10:48:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1731408506; bh=Eu4u+XjRhHRBcsdPX2n38zDPOuVHUJ9FIimTmlAgrEI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rjo+t3t3cEOtum0j3mNrkewM6v7mLLgW1mtPvUP+DeFwgC73Hu8lJ2Gz6KPol4ZGv xKPHo1BEBKmAbcvPt05eeqQUbyuNWlESkaHcmPaY/dw0Lo4OTQUnG1sGTb5XOOxXS8 s2LFBDRRh8iN0HfbsoJ3YWhohQbkd//f1MQlen80= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hyunwoo Kim , Stefano Garzarella , "Michael S. Tsirkin" , Jakub Kicinski Subject: [PATCH 6.11 183/184] hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer Date: Tue, 12 Nov 2024 11:22:21 +0100 Message-ID: <20241112101907.889791794@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241112101900.865487674@linuxfoundation.org> References: <20241112101900.865487674@linuxfoundation.org> User-Agent: quilt/0.67 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 6.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hyunwoo Kim commit e629295bd60abf4da1db85b82819ca6a4f6c1e79 upstream. When hvs is released, there is a possibility that vsk->trans may not be initialized to NULL, which could lead to a dangling pointer. This issue is resolved by initializing vsk->trans to NULL. Signed-off-by: Hyunwoo Kim Reviewed-by: Stefano Garzarella Acked-by: Michael S. Tsirkin Link: https://patch.msgid.link/Zys4hCj61V+mQfX2@v4bel-B760M-AORUS-ELITE-AX Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/vmw_vsock/hyperv_transport.c | 1 + 1 file changed, 1 insertion(+) --- a/net/vmw_vsock/hyperv_transport.c +++ b/net/vmw_vsock/hyperv_transport.c @@ -549,6 +549,7 @@ static void hvs_destruct(struct vsock_so vmbus_hvsock_device_unregister(chan); kfree(hvs); + vsk->trans = NULL; } static int hvs_dgram_bind(struct vsock_sock *vsk, struct sockaddr_vm *addr)