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bh=izF37hwPTf6bCeam4Hj6F/lVeCNXR9LTF5HyaDLDy00=; b=d5A5LN1Fbiot5SerKpP747wAsI/rgnRLhSEVj/z5XQc9yF1hwTXSnxe4Bo9tarpR0yyS4X qUDX2U/QWNpzntlOnAsbgVM5ucsbnXepJ/qCZXJiiwwqkI1+OtGGuV0k3xDZcUDgtMOKe1 Zvu43pXoFmG2ZZXWo3kF9KWfKg6AUQI= X-MC-Unique: 1ceUcGkWOZ6JGCVAXsxcfA-1 From: Jason Wang To: qemu-devel@nongnu.org, qemu-security@nongnu.org Subject: [PATCH V4 07/10] rtl8139: switch to use qemu_receive_packet() for loopback Date: Fri, 5 Mar 2021 14:26:35 +0800 Message-Id: <20210305062638.6749-8-jasowang@redhat.com> In-Reply-To: <20210305062638.6749-1-jasowang@redhat.com> References: <20210305062638.6749-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 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=63.128.21.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: alxndr@bu.edu, Jason Wang , philmd@redhat.com, ppandit@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Alexander Bulekov 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 Buglink: https://bugs.launchpad.net/qemu/+bug/1910826 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Jason Wang --- hw/net/rtl8139.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c index 4675ac878e..90b4fc63ce 100644 --- a/hw/net/rtl8139.c +++ b/hw/net/rtl8139.c @@ -1795,7 +1795,7 @@ static void rtl8139_transfer_frame(RTL8139State *s, u= int8_t *buf, int size, } =20 DPRINTF("+++ transmit loopback mode\n"); - rtl8139_do_receive(qemu_get_queue(s->nic), buf, size, do_interrupt= ); + qemu_receive_packet(qemu_get_queue(s->nic), buf, size); =20 if (iov) { g_free(buf2); --=20 2.24.3 (Apple Git-128)