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CVE-2026-49429

🗓️ 19 Aug 2026 05:15:21Reported by freebsdType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 77 Views

ZFS_IOC_USERSPACE_MANY ioctl truncates 64-bit size to 32-bit allocation, causing kernel heap overflow and privilege escalation. CVE-2026-49429.

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[
  {
    "defaultStatus": "unknown",
    "modules": [
      "zfs"
    ],
    "product": "FreeBSD",
    "vendor": "FreeBSD",
    "versions": [
      {
        "status": "affected",
        "versionType": "release",
        "version": "15.1-RELEASE",
        "lessThan": "p1"
      },
      {
        "status": "affected",
        "versionType": "release",
        "version": "15.0-RELEASE",
        "lessThan": "p11"
      },
      {
        "status": "affected",
        "versionType": "release",
        "version": "14.4-RELEASE",
        "lessThan": "p7"
      },
      {
        "status": "affected",
        "versionType": "release",
        "version": "14.3-RELEASE",
        "lessThan": "p16"
      }
    ]
  }
]

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20 Aug 2026 04:16Current
7.7High risk
Vulners AI Score7.7
CVSS 3.17.8
EPSS0.00165
SSVC
77