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vuln-cve/data/2026/49xxx/CVE-2026-49412.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-49412",
"assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
"state": "PUBLISHED",
"assignerShortName": "freebsd",
"dateReserved": "2026-05-29T20:24:28.615Z",
"datePublished": "2026-06-27T09:02:55.482Z",
"dateUpdated": "2026-06-30T03:55:29.049Z"
},
"containers": {
"cna": {
"datePublic": "2026-06-09T23:30:00.000Z",
"title": "Use-after-free bug in the IPV6_MSFILTER socket option handler",
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:29.ip6_multicast.asc"
}
],
"affected": [
{
"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"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Andrew Griffiths at Calif.io"
},
{
"lang": "en",
"type": "finder",
"value": "Maik Münch"
}
],
"descriptions": [
{
"lang": "en",
"value": "The kernel handler for IPV6_MSFILTER dropped a serializing lock in order to copy the source-filter list from userspace, then reacquired the lock. During this window another thread could free the multicast filter structure, leaving the handler with a stale pointer to freed memory.\n\nAn unprivileged local user can exploit this use-after-free to escalate privileges."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416: Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109",
"shortName": "freebsd",
"dateUpdated": "2026-06-27T09:02:55.482Z"
},
"x_generator": {
"engine": "cvelib 1.8.0"
}
},
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-29T00:00:00+00:00",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3",
"id": "CVE-2026-49412"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-30T03:55:29.049Z"
}
}
]
}
}