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CVE-2026-49412 Use-after-free bug in the IPV6_MSFILTER socket option handler

🗓️ 27 Jun 2026 09:02:55Reported by freebsdType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

CVE-2026-49412: Use-after-free in IPV6_MSFILTER enables local privilege escalation by freeing filter during copy.

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Affected
Refs
[
  {
    "defaultStatus": "unknown",
    "modules": [
      "ip6_multicast"
    ],
    "product": "FreeBSD",
    "vendor": "FreeBSD",
    "versions": [
      {
        "status": "affected",
        "versionType": "release",
        "version": "15.0-RELEASE",
        "lessThan": "p10"
      },
      {
        "status": "affected",
        "versionType": "release",
        "version": "14.4-RELEASE",
        "lessThan": "p6"
      },
      {
        "status": "affected",
        "versionType": "release",
        "version": "14.3-RELEASE",
        "lessThan": "p15"
      }
    ]
  }
]

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