CVE-2025-39965
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
xfrm: xfrm_alloc_spi shouldn't use 0 as SPI
x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value.
__xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- 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).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-39965",
"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": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"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": "3d8090bb53424432fa788fe9a49e8ceca74f0544",
"lessThan": "0baf92d0b1590b903c1f4ead75e61715e50e8146",
"versionType": "git"
},
{
"status": "affected",
"version": "2fc5b54368a1bf1d2d74b4d3b8eea5309a653e38",
"lessThan": "9fcedabaae0096f712bbb4ccca6a8538af1cd1c8",
"versionType": "git"
},
{
"status": "affected",
"version": "29e9158f91f99057dbd35db5e8674d93b38549fe",
"lessThan": "a78e55776522373c446f18d5002a8de4b09e6bf7",
"versionType": "git"
},
{
"status": "affected",
"version": "94f39804d891cffe4ce17737d295f3b195bc7299",
"lessThan": "cd8ae32e4e4652db55bce6b9c79267d8946765a9",
"versionType": "git"
},
{
"status": "affected",
"version": "c67d4e7a8f90fb6361ca89d4d5c9a28f4e935e47",
"versionType": "git"
},
{
"status": "affected",
"version": "6.15.11",
"lessThan": "6.16",
"versionType": "semver"
}
],
"programFiles": [
"net/xfrm/xfrm_state.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6.103",
"lessThan": "6.6.109",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.43",
"lessThan": "6.12.50",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.16.2",
"lessThan": "6.16.10",
"versionType": "semver"
}
],
"programFiles": [
"net/xfrm/xfrm_state.c"
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2025-10-13T14:15:34.910",
"references": [
{
"url": "https://git.kernel.org/stable/c/0baf92d0b1590b903c1f4ead75e61715e50e8146",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/9fcedabaae0096f712bbb4ccca6a8538af1cd1c8",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a78e55776522373c446f18d5002a8de4b09e6bf7",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/cd8ae32e4e4652db55bce6b9c79267d8946765a9",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"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\nxfrm: xfrm_alloc_spi shouldn't use 0 as SPI\n\nx->id.spi == 0 means \"no SPI assigned\", but since commit\n94f39804d891 (\"xfrm: Duplicate SPI Handling\"), we now create states\nand add them to the byspi list with this value.\n\n__xfrm_state_delete doesn't remove those states from the byspi list,\nsince they shouldn't be there, and this shows up as a UAF the next\ntime we go through the byspi list."
}
],
"lastModified": "2026-07-30T06:24:01.897",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A33D59EB-F9EC-4F4A-B85C-8B9DF77F0CBE",
"versionEndExcluding": "6.6.109",
"versionStartIncluding": "6.6.103"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D946BB01-10F6-44C7-A2E5-672C4B746920",
"versionEndExcluding": "6.12.50",
"versionStartIncluding": "6.12.43"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "53FE35DC-2528-48D7-A855-1127CA02EE4D",
"versionEndExcluding": "6.16",
"versionStartIncluding": "6.15.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EDE9892A-2523-424A-8D02-DFCE8B965230",
"versionEndExcluding": "6.16.10",
"versionStartIncluding": "6.16.2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5A4516A6-C12E-42A4-8C0E-68AEF3264504"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3963C3A0-CEA1-4F5C-8011-3A593ABB684D"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}