{"schemaVersion":3,"id":"USN-2974-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"qemu, qemu-kvm vulnerabilities\n\nZuozhi Fzz discovered that QEMU incorrectly handled USB OHCI emulation\nsupport. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2016-2391)\n\nQinghao Tang discovered that QEMU incorrectly handled USB Net emulation\nsupport. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2016-2392)\n\nQinghao Tang discovered that QEMU incorrectly handled USB Net emulation\nsupport. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service, or possibly leak\nhost memory bytes. (CVE-2016-2538)\n\nHongke Yang discovered that QEMU incorrectly handled NE2000 emulation\nsupport. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service. (CVE-2016-2841)\n\nLing Liu discovered that QEMU incorrectly handled IP checksum routines. An\nattacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service, or possibly leak host memory bytes.\n(CVE-2016-2857)\n\nIt was discovered that QEMU incorrectly handled the PRNG back-end support.\nAn attacker inside the guest could use this issue to cause QEMU to crash,\nresulting in a denial of service. This issue only applied to Ubuntu 14.04\nLTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-2858)\n\nWei Xiao and Qinghao Tang discovered that QEMU incorrectly handled access\nin the VGA module. A privileged attacker inside the guest could use this\nissue to cause QEMU to crash, resulting in a denial of service, or possibly\nexecute arbitrary code on the host. In the default installation, when QEMU\nis used with libvirt, attackers would be isolated by the libvirt AppArmor\nprofile. (CVE-2016-3710)\n\nZuozhi Fzz discovered that QEMU incorrectly handled access in the VGA\nmodule. A privileged attacker inside the guest could use this issue to\ncause QEMU to crash, resulting in a denial of service, or possibly\nexecute arbitrary code on the host. In the default installation, when QEMU\nis used with libvirt, attackers would be isolated by the libvirt AppArmor\nprofile. (CVE-2016-3712)\n\nOleksandr Bazhaniuk discovered that QEMU incorrectly handled Luminary\nMicro Stellaris ethernet controller emulation. A remote attacker could use\nthis issue to cause QEMU to crash, resulting in a denial of service.\n(CVE-2016-4001)\n\nOleksandr Bazhaniuk discovered that QEMU incorrectly handled MIPSnet\ncontroller emulation. A remote attacker could use this issue to cause QEMU\nto crash, resulting in a denial of service. (CVE-2016-4002)\n\nDonghai Zdh discovered that QEMU incorrectly handled the Task Priority\nRegister(TPR). A privileged attacker inside the guest could use this issue\nto possibly leak host memory bytes. This issue only applied to Ubuntu 14.04\nLTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-4020)\n\nDu Shaobo discovered that QEMU incorrectly handled USB EHCI emulation\nsupport. A privileged attacker inside the guest could use this issue to\ncause QEMU to consume resources, resulting in a denial of service.\n(CVE-2016-4037)","dates":{"published":"2016-05-12T14:33:38.000Z","modified":"2026-02-10T04:40:59.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"qemu","name":"qemu","label":"qemu","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qemu","purlType":"deb","versions":[{"text":"< 2.0.0+dfsg-2ubuntu1.24","noFixRecorded":false,"fixedIn":null},{"text":"< 1:2.5+dfsg-5ubuntu10.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.0.0+dfsg-2ubuntu1.24 | < 1:2.5+dfsg-5ubuntu10.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-2974-1","label":"ubuntu.com/security/notices/USN-2974-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-2391","label":"ubuntu.com/security/CVE-2016-2391","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2392","label":"ubuntu.com/security/CVE-2016-2392","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2538","label":"ubuntu.com/security/CVE-2016-2538","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2841","label":"ubuntu.com/security/CVE-2016-2841","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2857","label":"ubuntu.com/security/CVE-2016-2857","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2858","label":"ubuntu.com/security/CVE-2016-2858","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-3710","label":"ubuntu.com/security/CVE-2016-3710","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-3712","label":"ubuntu.com/security/CVE-2016-3712","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-4001","label":"ubuntu.com/security/CVE-2016-4001","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-4002","label":"ubuntu.com/security/CVE-2016-4002","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-4020","label":"ubuntu.com/security/CVE-2016-4020","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-4037","label":"ubuntu.com/security/CVE-2016-4037","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2016-2391","CVE-2016-2392","CVE-2016-2538","CVE-2016-2841","CVE-2016-2857","CVE-2016-2858","CVE-2016-3710","CVE-2016-3712","CVE-2016-4001","CVE-2016-4002","CVE-2016-4020","CVE-2016-4037"],"downstream":[],"duplicates":[],"related":["CVE-2016-2391","CVE-2016-2392","CVE-2016-2538","CVE-2016-2841","CVE-2016-2857","CVE-2016-2858","CVE-2016-3710","CVE-2016-3712","CVE-2016-4001","CVE-2016-4002","CVE-2016-4020","CVE-2016-4037"]},"timeline":[{"kind":"published","date":"2016-05-12T14:33:38.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T04:40:59.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T16:17:56.836Z","stale":false,"partial":false}}