Provide references for CVE-2020-8840.
Where can I find more information about CVE-2020-8840?
References are available at: https://lists.apache.org/thread.html/r078e68a926ea6be12e8404e47f45aabf04bb4668e8265c0de41db6db%40%3Ccommits.druid.apache.org%3E, https://lists.apache.org/thread.html/r319f19c74e06c201b9d4e8b282a4e4b2da6dcda022fb46f007dd00d3%40%3Ccommits.druid.apache.org%3E, https://lists.debian.org/debian-lts-announce/2020/02/msg00020.html, https://lists.apache.org/thread.html/r3d20a2660b36551fd8257d479941782af4a7169582449fac1704bde2%40%3Ccommits.druid.apache.org%3E, https://lists.apache.org/thread.html/rb43f9a65150948a6bebd3cb77ee3e105d40db2820fd547528f4e7f89%40%3Cissues.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r9ecf211c22760b00967ebe158c6ed7dba9142078e2a630ab8904a5b7%40%3Cdev.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r3539bd3a377991217d724879d239e16e86001c54160076408574e1da%40%3Cnotifications.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r6fdd4c61a09a0c89f581b4ddb3dc6f154ab0c705fcfd0a7358b2e4e5%40%3Cissues.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/re7326b8655eab931f2a9ce074fd9a1a51b5db11456bee9b48e1e170c%40%3Cissues.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r428d068b2a4923f1a5a4f5fc6381b95205cfe7620169d16db78e9c71%40%3Cnotifications.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r46bebdeb59b8b7212d63a010ca445a9f5c4e9d64dcf693cab6f399d3%40%3Ccommits.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/re8ae2670ec456ef1c5a2a661a2838ab2cd00e9efa1e88c069f546f21%40%3Ccommits.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r8170007fd9b263d65b37d92a7b5d7bc357aedbb113a32838bc4a9485%40%3Cissues.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/rac5ee5d686818be7e7c430d35108ee01a88aae54f832d32f62431fd1%40%3Cnotifications.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/rdf8d389271a291dde3b2f99c36918d6cb1e796958af626cc140fee23%40%3Ccommits.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/rb5eedf90ba3633e171a2ffdfe484651c9490dc5df74c8a29244cbc0e%40%3Ccommits.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/r65ee95fa09c831843bac81eaa582fdddc2b6119912a72d1c83a9b882%40%3Cissues.zookeeper.apache.org%3E, https://lists.apache.org/thread.html/rb99c7321eba5d4c907beec46675d52827528b738cfafd48eb4d862f1%40%3Cdev.tomee.apache.org%3E, https://lists.apache.org/thread.html/rdea588d4a0ebf9cb7ce8c3a8f18d0d306507c4f8ba178dd3d20207b8%40%3Cdev.tomee.apache.org%3E, https://lists.apache.org/thread.html/r1c09b9551f6953dbeca190a4c4b78198cdbb9825fce36f96fe3d8218%40%3Cdev.tomee.apache.org%3E, https://lists.apache.org/thread.html/rc068e824654c4b8bd4f2490bec869e29edbfcd5dfe02d47cbf7433b2%40%3Cdev.tomee.apache.org%3E, https://lists.apache.org/thread.html/rc717fd6c65190f4e592345713f9ef0723fb7d71f624caa2a17caa26a%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/rdf311f13e6356297e0ffe74397fdd25a3687b0a16e687c3ff5b834d8%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/rf28ab6f224b48452afd567dfffb705fbda0fdbbf6535f6bc69d47e91%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r2fa8046bd47fb407ca09b5107a80fa6147ba4ebe879caae5c98b7657%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r5d8bea8e9d17b6efcf4a0e4e194e91ef46a99f505777a31a60da2b38%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r94930e39b60fff236160c1c4110fe884dc093044b067aa5fc98d7ee1%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r446646c5588b10f5e02409ad580b12f314869009cdfbf844ca395cec%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r1efc776fc6ce3387593deaa94bbdd296733b1b01408a39c8d1ab9e0e%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/rfc1ccfe89332155b72ce17f13a2701d3e7b9ec213324ceb90e79a28a%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r9e59ebaf76fd00b2fa3ff5ebf18fe075ca9f4376216612c696f76718%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/rcc72b497e3dff2dc62ec9b89ceb90bc4e1b14fc56c3c252a6fcbb013%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r7762d69e85c58d6948823424017ef4c08f47de077644277fa18cc116%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/ra275f29615f35d5b40106d1582a41e5388b2a5131564e9e01a572987%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/rb73708bf714ed6dbc1212da082e7703e586077f0c92f3940b2e82caf%40%3Cdev.ranger.apache.org%3E, https://lists.apache.org/thread.html/r7e5c10534ed06bf805473ac85e8412fe3908a8fa4cabf5027bf11220%40%3Cdev.kafka.apache.org%3E, https://lists.apache.org/thread.html/r8e96c340004b7898cad3204ea51280ef6e4b553a684e1452bf1b18b1%40%3Cjira.kafka.apache.org%3E, https://www.oracle.com/security-alerts/cpuapr2020.html, https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E, https://lists.apache.org/thread.html/rf1bbc0ea4a9f014cf94df9a12a6477d24a27f52741dbc87f2fd52ff2%40%3Cissues.geode.apache.org%3E, https://www.oracle.com/security-alerts/cpuoct2020.html, https://github.com/FasterXML/jackson-databind/issues/2620, https://security.netapp.com/advisory/ntap-20200327-0002/, http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200610-01-fastjason-en.