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bh=RyNIINoBz1Hi6Rbx/YwEruYvIrkhCW2bFy+35okkCBk=; b=YTbmsC9WU2kf3Xgdx8UX87kKN6NRNSqolk6y+kaByBmy5uT0R8WJODqm6CHh+j6Cz3kU0b wDkq92LloDWDn8zLScOcTxWq/hQgY6tfOx5nmnU0eDYkGBM4BYk2R5yHK+ffbj602l3Tqu zxb/xhoKnrKqlXhxilr4wl1eXNHc3O4= X-MC-Unique: u2_QYXjCP-CJuwgKosWmAg-1 From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL V2 08/20] msf2-mac: switch to use qemu_receive_packet() for loopback Date: Mon, 15 Mar 2021 17:14:21 +0800 Message-Id: <1615799673-31549-9-git-send-email-jasowang@redhat.com> In-Reply-To: <1615799673-31549-1-git-send-email-jasowang@redhat.com> References: <1615799673-31549-1-git-send-email-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang , qemu-stable@nongnu.org, qemu-devel@nongnu.org, Prasad J Pandit Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) This patch switches to use qemu_receive_packet() which can detect reentrancy and return early. This is intended to address CVE-2021-3416. Cc: Prasad J Pandit Cc: qemu-stable@nongnu.org Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Jason Wang --- hw/net/msf2-emac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/net/msf2-emac.c b/hw/net/msf2-emac.c index 32ba9e8..3e62060 100644 --- a/hw/net/msf2-emac.c +++ b/hw/net/msf2-emac.c @@ -158,7 +158,7 @@ static void msf2_dma_tx(MSF2EmacState *s) * R_CFG1 bit 0 is set. */ if (s->regs[R_CFG1] & R_CFG1_LB_EN_MASK) { - nc->info->receive(nc, buf, size); + qemu_receive_packet(nc, buf, size); } else { qemu_send_packet(nc, buf, size); } --=20 2.7.4