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vuln-cve/data/2021/47xxx/CVE-2021-47367.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2021-47367",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-05-21T14:58:30.810Z",
"datePublished": "2024-05-21T15:03:33.861Z",
"dateUpdated": "2026-05-11T13:53:20.233Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T13:53:20.233Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio-net: fix pages leaking when building skb in big mode\n\nWe try to use build_skb() if we had sufficient tailroom. But we forget\nto release the unused pages chained via private in big mode which will\nleak pages. Fixing this by release the pages after building the skb in\nbig mode."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/virtio_net.c"
],
"versions": [
{
"version": "fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7",
"lessThan": "f020bb63b5d2e5576acadd10e158fe3b04af67ba",
"status": "affected",
"versionType": "git"
},
{
"version": "fb32856b16ad9d5bcd75b76a274e2c515ac7b9d7",
"lessThan": "afd92d82c9d715fb97565408755acad81573591a",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/virtio_net.c"
],
"versions": [
{
"version": "5.13",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.13",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.14.9",
"lessThanOrEqual": "5.14.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.13",
"versionEndExcluding": "5.14.9"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.13",
"versionEndExcluding": "5.15"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba"
},
{
"url": "https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a"
}
],
"title": "virtio-net: fix pages leaking when building skb in big mode",
"x_generator": {
"engine": "bippy-1.2.0"
}
},
"adp": [
{
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-119",
"lang": "en",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"
}
]
}
],
"affected": [
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "5.13",
"status": "affected"
}
]
},
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "fb32856b16ad",
"status": "affected",
"lessThan": "f020bb63b5d2",
"versionType": "custom"
}
]
},
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "fb32856b16ad",
"status": "affected",
"lessThan": "afd92d82c9d7",
"versionType": "custom"
}
]
},
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "0",
"status": "unaffected",
"lessThan": "5.13",
"versionType": "custom"
}
]
},
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "5.15",
"status": "unaffected"
}
]
},
{
"vendor": "linux",
"product": "linux_kernel",
"cpes": [
"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"versions": [
{
"version": "5.14.9",
"status": "unaffected",
"lessThanOrEqual": "5.15",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"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:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
}
},
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2024-06-06T15:00:03.181537Z",
"id": "CVE-2021-47367",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2024-06-06T15:30:00.591Z"
}
},
{
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2024-08-04T05:32:08.538Z"
},
"title": "CVE Program Container",
"references": [
{
"url": "https://git.kernel.org/stable/c/f020bb63b5d2e5576acadd10e158fe3b04af67ba",
"tags": [
"x_transferred"
]
},
{
"url": "https://git.kernel.org/stable/c/afd92d82c9d715fb97565408755acad81573591a",
"tags": [
"x_transferred"
]
}
]
}
]
}
}