CVE-2025-68246 (GCVE-0-2025-68246)
Vulnerability from cvelistv5 – Published: 2025-12-16 14:21 – Updated: 2025-12-20 08:52
VLAI?
Title
ksmbd: close accepted socket when per-IP limit rejects connection
Summary
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: close accepted socket when per-IP limit rejects connection
When the per-IP connection limit is exceeded in ksmbd_kthread_fn(),
the code sets ret = -EAGAIN and continues the accept loop without
closing the just-accepted socket. That leaks one socket per rejected
attempt from a single IP and enables a trivial remote DoS.
Release client_sk before continuing.
This bug was found with ZeroPath.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
0626e6641f6b467447c81dd7678a69c66f7746cf , < 7a3c7154d5fc05956a8ad9e72ecf49e21555bfca
(git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 5746b2a0f5eb3d79667b3c51fe849bd62464220e (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 4587a7826be1ae0190dba10ff70b46bb0e3bc7d3 (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 35521b5a7e8a184548125f4530552101236dcda1 (git) Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9 (git) |
||
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"versions": [
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"version": "0",
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{
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{
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"version": "6.17.9",
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{
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"status": "unaffected",
"version": "6.18",
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}
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"negate": false,
"operator": "OR"
}
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],
"descriptions": [
{
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: close accepted socket when per-IP limit rejects connection\n\nWhen the per-IP connection limit is exceeded in ksmbd_kthread_fn(),\nthe code sets ret = -EAGAIN and continues the accept loop without\nclosing the just-accepted socket. That leaks one socket per rejected\nattempt from a single IP and enables a trivial remote DoS.\n\nRelease client_sk before continuing.\n\nThis bug was found with ZeroPath."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-20T08:52:17.480Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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},
{
"url": "https://git.kernel.org/stable/c/5746b2a0f5eb3d79667b3c51fe849bd62464220e"
},
{
"url": "https://git.kernel.org/stable/c/4587a7826be1ae0190dba10ff70b46bb0e3bc7d3"
},
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"url": "https://git.kernel.org/stable/c/35521b5a7e8a184548125f4530552101236dcda1"
},
{
"url": "https://git.kernel.org/stable/c/98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9"
}
],
"title": "ksmbd: close accepted socket when per-IP limit rejects connection",
"x_generator": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-68246",
"datePublished": "2025-12-16T14:21:23.551Z",
"dateReserved": "2025-12-16T13:41:40.264Z",
"dateUpdated": "2025-12-20T08:52:17.480Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-68246\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T15:15:53.880\",\"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\\nksmbd: close accepted socket when per-IP limit rejects connection\\n\\nWhen the per-IP connection limit is exceeded in ksmbd_kthread_fn(),\\nthe code sets ret = -EAGAIN and continues the accept loop without\\nclosing the just-accepted socket. That leaks one socket per rejected\\nattempt from a single IP and enables a trivial remote DoS.\\n\\nRelease client_sk before continuing.\\n\\nThis bug was found with ZeroPath.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/35521b5a7e8a184548125f4530552101236dcda1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4587a7826be1ae0190dba10ff70b46bb0e3bc7d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5746b2a0f5eb3d79667b3c51fe849bd62464220e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7a3c7154d5fc05956a8ad9e72ecf49e21555bfca\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/98a5fd31cbf72d46bf18e50b3ab0ce86d5f319a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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