CVE-2025-38550
Estado: ModificadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
pmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec() does, the reference should be put after ip6_mc_clear_src() return.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.16%
- Percentil entre todas las CVEs puntuadas: 4
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation75 % - Impacto principal
T1499.004Application or System Exploitationimpact60 %
AV:L PR:L sin UI indica escalada local; kernel IPv6 mcast con use-after-free puede causar DoS o corrupción de memoria (C:H I:H A:H).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (2)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/1b5b413094af8d88a31b5df3fd262f6baca53841
- https://git.kernel.org/stable/c/5f18e0130194550dff734e155029ae734378b5ea
- https://git.kernel.org/stable/c/6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806
- https://git.kernel.org/stable/c/728db00a14cacb37f36e9382ab5fad55caf890cc
- https://git.kernel.org/stable/c/7929d27c747eafe8fca3eecd74a334503ee4c839
- https://git.kernel.org/stable/c/ae3264a25a4635531264728859dbe9c659fad554
- https://git.kernel.org/stable/c/dcbc346f50a009d8b7f4e330f9f2e22d6442fa26
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-38550",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"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"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"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"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "b564ec4491d24b40900c64ab9e29a208f17f3108",
"lessThan": "1b5b413094af8d88a31b5df3fd262f6baca53841",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "728db00a14cacb37f36e9382ab5fad55caf890cc",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "dcbc346f50a009d8b7f4e330f9f2e22d6442fa26",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "7929d27c747eafe8fca3eecd74a334503ee4c839",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "5f18e0130194550dff734e155029ae734378b5ea",
"versionType": "git"
},
{
"status": "affected",
"version": "63ed8de4be81b699ca727e9f8e3344bd487806d7",
"lessThan": "ae3264a25a4635531264728859dbe9c659fad554",
"versionType": "git"
}
],
"programFiles": [
"net/ipv6/mcast.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.190",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.147",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.100",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.40",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.15.8",
"versionType": "semver",
"lessThanOrEqual": "6.15.*"
},
{
"status": "unaffected",
"version": "6.16",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/ipv6/mcast.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-08-16T12:15:31.137",
"references": [
{
"url": "https://git.kernel.org/stable/c/1b5b413094af8d88a31b5df3fd262f6baca53841",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5f18e0130194550dff734e155029ae734378b5ea",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/728db00a14cacb37f36e9382ab5fad55caf890cc",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7929d27c747eafe8fca3eecd74a334503ee4c839",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ae3264a25a4635531264728859dbe9c659fad554",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/dcbc346f50a009d8b7f4e330f9f2e22d6442fa26",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: Delay put pmc->idev in mld_del_delrec()\n\npmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec()\ndoes, the reference should be put after ip6_mc_clear_src() return."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ipv6: mcast: Retraso en la colocación de pmc->idev en mld_del_delrec() pmc->idev todavía se usa en ip6_mc_clear_src(), por lo que, como lo hace mld_clear_delrec(), la referencia se debe colocar después del retorno de ip6_mc_clear_src()."
}
],
"lastModified": "2026-07-30T06:23:25.383",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "00A77226-2C17-41C7-BAA0-A33ECE2B2912",
"versionEndExcluding": "5.15.190",
"versionStartIncluding": "5.13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A4FD62FC-0DAE-4ACE-8C9C-66156518C3E1",
"versionEndExcluding": "6.1.147",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "094B81E0-B756-4727-85CA-F3F8D1C9D116",
"versionEndExcluding": "6.6.100",
"versionStartIncluding": "6.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0099D5A4-B157-4D36-8858-982C7D579030",
"versionEndExcluding": "6.12.40",
"versionStartIncluding": "6.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C7AFE5B0-F3B1-4D30-B8BF-EDA0385C4746",
"versionEndExcluding": "6.15.8",
"versionStartIncluding": "6.13"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A0517869-312D-4429-80C2-561086E1421C"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "85421F4E-C863-4ABF-B4B4-E887CC2F7F92"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3827F0D4-5FEE-4181-B267-5A45E7CA11FC"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}