CVE-2025-68312 (GCVE-0-2025-68312)
Vulnerability from cvelistv5
Published
2025-12-16 15:39
Modified
2025-12-16 15:39
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
usbnet: Prevents free active kevent
The root cause of this issue are:
1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);
put the kevent work in global workqueue. However, the kevent has not yet
been scheduled when the usbnet device is unregistered. Therefore, executing
free_netdev() results in the "free active object (kevent)" error reported
here.
2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(),
if the usbnet device is up, ndo_stop() is executed to cancel the kevent.
However, because the device is not up, ndo_stop() is not executed.
The solution to this problem is to cancel the kevent before executing
free_netdev().
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 8b4588b8b00b299be16a35be67b331d8fdba03f3 Version: 135199a2edd459d2b123144efcd7f9bcd95128e4 Version: 635fd8953e4309b54ca6a81bed1d4a87668694f4 Version: a69e617e533edddf3fa3123149900f36e0a6dc74 Version: a69e617e533edddf3fa3123149900f36e0a6dc74 Version: a69e617e533edddf3fa3123149900f36e0a6dc74 Version: a69e617e533edddf3fa3123149900f36e0a6dc74 Version: a69e617e533edddf3fa3123149900f36e0a6dc74 Version: d2d6b530d89b0a912148018027386aa049f0a309 Version: e2a521a7dcc463c5017b4426ca0804e151faeff7 Version: 7f77dcbc030c2faa6d8e8a594985eeb34018409e Version: d49bb8cf9bfaa06aa527eb30f1a52a071da2e32f Version: db3b738ae5f726204876f4303c49cfdf4311403f |
||
{
"containers": {
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{
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"product": "Linux",
"programFiles": [
"drivers/net/usb/usbnet.c"
],
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},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/net/usb/usbnet.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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},
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.4.302",
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},
{
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"status": "unaffected",
"version": "5.10.247",
"versionType": "semver"
},
{
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"versionType": "semver"
},
{
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"status": "unaffected",
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},
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"status": "unaffected",
"version": "6.6.117",
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},
{
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"status": "unaffected",
"version": "6.12.58",
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},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.8",
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},
{
"lessThanOrEqual": "*",
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"version": "6.18",
"versionType": "original_commit_for_fix"
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}
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"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Prevents free active kevent\n\nThe root cause of this issue are:\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\nput the kevent work in global workqueue. However, the kevent has not yet\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\nfree_netdev() results in the \"free active object (kevent)\" error reported\nhere.\n\n2. Another factor is that when calling usbnet_disconnect()-\u003eunregister_netdev(),\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\nHowever, because the device is not up, ndo_stop() is not executed.\n\nThe solution to this problem is to cancel the kevent before executing\nfree_netdev()."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-16T15:39:43.174Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e"
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{
"url": "https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915"
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{
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{
"url": "https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d"
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{
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},
{
"url": "https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84"
},
{
"url": "https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc"
},
{
"url": "https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de"
}
],
"title": "usbnet: Prevents free active kevent",
"x_generator": {
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},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-68312",
"datePublished": "2025-12-16T15:39:43.174Z",
"dateReserved": "2025-12-16T14:48:05.294Z",
"dateUpdated": "2025-12-16T15:39:43.174Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68312\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:10.770\",\"lastModified\":\"2025-12-18T15:08:06.237\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nusbnet: Prevents free active kevent\\n\\nThe root cause of this issue are:\\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\\nput the kevent work in global workqueue. However, the kevent has not yet\\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\\nfree_netdev() results in the \\\"free active object (kevent)\\\" error reported\\nhere.\\n\\n2. Another factor is that when calling usbnet_disconnect()-\u003eunregister_netdev(),\\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\\nHowever, because the device is not up, ndo_stop() is not executed.\\n\\nThe solution to this problem is to cancel the kevent before executing\\nfree_netdev().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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