{
  "fix": "qemu-system 1:2.11\u002Bdfsg-1ubuntu7.37",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-qemu-system-1-2.11-dfsg-1ubuntu7.37",
  "summary": "qemu-system 1:2.11\u002Bdfsg-1ubuntu7.37, released June 15, 2021, fixes 13 CVEs in qemu-system. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "qemu-system 1:2.11\u002Bdfsg-1ubuntu7.37 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2021-06-15T14:15:00Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 13 CVEs, none high severity",
  "supported": false,
  "cveCount": 13,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.00489,
  "maxCvss": 6.5,
  "appliesTo": [
    {
      "product": "qemu-system",
      "productUrl": "https://patchblox.com/security/product/linux/qemu-system",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:2.11\u002Bdfsg-1ubuntu7.37",
      "supported": true
    }
  ],
  "cves": [
    {
      "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-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-2021-3527",
      "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-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-2021-3592",
      "url": "https://patchblox.com/security/cve/CVE-2021-3592",
      "title": "libslirp0: An invalid pointer initialization issue was found in the SLiRP networkingimplementation of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.8,
      "epss": 0.00326,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3593",
      "url": "https://patchblox.com/security/cve/CVE-2021-3593",
      "title": "libslirp0: An invalid pointer initialization issue was found in the SLiRP networkingimplementation of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.8,
      "epss": 0.00326,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3594",
      "url": "https://patchblox.com/security/cve/CVE-2021-3594",
      "title": "libslirp0: An invalid pointer initialization issue was found in the SLiRP networkingimplementation of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.8,
      "epss": 0.00326,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3595",
      "url": "https://patchblox.com/security/cve/CVE-2021-3595",
      "title": "libslirp0: An invalid pointer initialization issue was found in the SLiRP networkingimplementation of QEMU",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 3.8,
      "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
    }
  ],
  "dataAsOf": "2026-11-12T19:57:06Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}