{
  "fix": "qemu-system-misc 1:4.2-3ubuntu6.17",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-qemu-system-misc-1-4.2-3ubuntu6.17",
  "summary": "qemu-system-misc 1:4.2-3ubuntu6.17, released June 17, 2021, fixes 15 CVEs in qemu-system-misc. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "qemu-system-misc 1:4.2-3ubuntu6.17 for Ubuntu 20.04 LTS (focal)",
  "released": "2021-06-17T17:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-3546, high severity",
  "supported": false,
  "cveCount": 15,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00489,
  "maxCvss": 8.2,
  "appliesTo": [
    {
      "product": "qemu-system-misc",
      "productUrl": "https://patchblox.com/security/product/linux/qemu-system-misc",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1:4.2-3ubuntu6.17",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-3546",
      "url": "https://patchblox.com/security/cve/CVE-2021-3546",
      "title": "hivex: vhost-user-gpu: abstract vg_cleanup_mapping_iov (Li Qiang) [Orabug: 32950716]",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.2,
      "epss": 0.00463,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3409",
      "url": "https://patchblox.com/security/cve/CVE-2021-3409",
      "title": "qemu-block-extra: The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective,thus making QEMU vulnerable to the out-of-bou...",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.7,
      "epss": 0.00489,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3416",
      "url": "https://patchblox.com/security/cve/CVE-2021-3416",
      "title": "libguestfs-gfs2: QEMU: net: infinite loop in loopback mode may lead to stack overflow",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6,
      "epss": 0.00459,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3392",
      "url": "https://patchblox.com/security/cve/CVE-2021-3392",
      "title": "qemu-block-extra: A use-after-free flaw was found in the MegaRAID emulator of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.2,
      "epss": 0.0045,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3544",
      "url": "https://patchblox.com/security/cve/CVE-2021-3544",
      "title": "hivex: vhost-user-gpu: reorder free calls (Gerd Hoffmann) [Orabug: 32950701]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00436,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-15469",
      "url": "https://patchblox.com/security/cve/CVE-2020-15469",
      "title": "qemu-block-extra: In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 2.3,
      "epss": 0.00429,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3545",
      "url": "https://patchblox.com/security/cve/CVE-2021-3545",
      "title": "hivex: vhost-user-gpu: fix memory disclosure in virgl_cmd_get_capset_info (Li Qiang) [Orabug: 32950708]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00421,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3582",
      "url": "https://patchblox.com/security/cve/CVE-2021-3582",
      "title": "hivex: hw/rdma: Fix possible mremap overflow in the pvrdma device (Marcel Apfelbaum) [Orabug: 33120084]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00386,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3527",
      "url": "https://patchblox.com/security/cve/CVE-2021-3527",
      "title": "qemu-block-extra: A flaw was found in the USB redirector device (usb-redir) of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 5.5,
      "epss": 0.00374,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-20257",
      "url": "https://patchblox.com/security/cve/CVE-2021-20257",
      "title": "hivex: e1000: fail early for evil descriptor (Jason Wang) [Orabug: 32560552]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.0037,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3608",
      "url": "https://patchblox.com/security/cve/CVE-2021-3608",
      "title": "hivex: pvrdma: Fix the ring init error flow (Marcel Apfelbaum) [Orabug: 33120142]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6,
      "epss": 0.00363,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-35504",
      "url": "https://patchblox.com/security/cve/CVE-2020-35504",
      "title": "qemu-block-extra: A NULL pointer dereference flaw was found in the SCSI emulation support ofQEMU in versions before 6.0.0",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.00338,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-20221",
      "url": "https://patchblox.com/security/cve/CVE-2021-20221",
      "title": "qemu-block-extra: An out-of-bounds heap buffer access issue was found in the ARM GenericInterrupt Controller emulator of QEMU up to and...",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6,
      "epss": 0.00326,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-35505",
      "url": "https://patchblox.com/security/cve/CVE-2020-35505",
      "title": "qemu-block-extra: A NULL pointer dereference flaw was found in the am53c974 SCSI host busadapter emulation of QEMU in versions before 6...",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.00317,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3607",
      "url": "https://patchblox.com/security/cve/CVE-2021-3607",
      "title": "hivex: pvrdma: Ensure correct input on ring init (Marcel Apfelbaum) [Orabug: 33120146]",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6,
      "epss": 0.00299,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-13T14:02:24Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}