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vuln-cve/data/2021/47xxx/CVE-2021-47239.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2021-47239",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-04-10T18:59:19.532Z",
"datePublished": "2024-05-21T14:19:39.705Z",
"dateUpdated": "2026-05-11T13:50:39.132Z"
},
"containers": {
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"shortName": "Linux",
"dateUpdated": "2026-05-11T13:50:39.132Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: fix possible use-after-free in smsc75xx_bind\n\nThe commit 46a8b29c6306 (\"net: usb: fix memory leak in smsc75xx_bind\")\nfails to clean up the work scheduled in smsc75xx_reset->\nsmsc75xx_set_multicast, which leads to use-after-free if the work is\nscheduled to start after the deallocation. In addition, this patch\nalso removes a dangling pointer - dev->data[0].\n\nThis patch calls cancel_work_sync to cancel the scheduled work and set\nthe dangling pointer to NULL."
}
],
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{
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/usb/smsc75xx.c"
],
"versions": [
{
"version": "200dbfcad8011e50c3cec269ed7b980836eeb1fa",
"lessThan": "7cc8b2e05fcea6edd022d26e82091d781af8fd9b",
"status": "affected",
"versionType": "git"
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{
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"lessThan": "64160d1741a3de5204d1a822e058e0b4cc526504",
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{
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{
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"status": "affected",
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},
{
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"lessThan": "4252bf6c2b245f47011098113d405ffad6ad5d5b",
"status": "affected",
"versionType": "git"
},
{
"version": "635ac38b36255d3cfb8312cf7c471334f4d537e0",
"lessThan": "570a52cf3e01d19f7fd1a251dfc52b0cd86c13cb",
"status": "affected",
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},
{
"version": "70c886ac93f87ae7214a0c69151a28a8075dd95b",
"lessThan": "14616c372a7be01a2fb8c56c9d8debd232b9e43d",
"status": "affected",
"versionType": "git"
},
{
"version": "46a8b29c6306d8bbfd92b614ef65a47c900d8e70",
"lessThan": "56b786d86694e079d8aad9b314e015cd4ac02a3d",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/usb/smsc75xx.c"
],
"versions": [
{
"version": "4.4.271",
"lessThan": "4.4.274",
"status": "affected",
"versionType": "semver"
},
{
"version": "4.9.271",
"lessThan": "4.9.274",
"status": "affected",
"versionType": "semver"
},
{
"version": "4.14.235",
"lessThan": "4.14.238",
"status": "affected",
"versionType": "semver"
},
{
"version": "4.19.193",
"lessThan": "4.19.196",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.4.124",
"lessThan": "5.4.128",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.10.42",
"lessThan": "5.10.46",
"status": "affected",
"versionType": "semver"
},
{
"version": "5.12.9",
"lessThan": "5.12.13",
"status": "affected",
"versionType": "semver"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "4.4.271",
"versionEndExcluding": "4.4.274"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "4.9.274"
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"versionEndExcluding": "4.19.196"
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"references": [
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"url": "https://git.kernel.org/stable/c/7cc8b2e05fcea6edd022d26e82091d781af8fd9b"
},
{
"url": "https://git.kernel.org/stable/c/64160d1741a3de5204d1a822e058e0b4cc526504"
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{
"url": "https://git.kernel.org/stable/c/c4e3be2e7742863e454ce31faf8fd0109c00050b"
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{
"url": "https://git.kernel.org/stable/c/2fc8300c9cfa5167fcb5b1a2a07db6f53e82f59b"
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{
"url": "https://git.kernel.org/stable/c/56b786d86694e079d8aad9b314e015cd4ac02a3d"
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],
"title": "net: usb: fix possible use-after-free in smsc75xx_bind",
"x_generator": {
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"dateUpdated": "2024-08-04T05:32:07.920Z"
},
"title": "CVE Program Container",
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"metrics": [
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"other": {
"type": "ssvc",
"content": {
"id": "CVE-2021-47239",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-09-10T15:40:00.710972Z"
}
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],
"title": "CISA ADP Vulnrichment",
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