CVE-2023-32246
Vulnerability from cvelistv5
Published
2025-08-16 13:22
Modified
2025-09-03 12:31
Severity ?
EPSS score ?
Summary
ksmbd: call rcu_barrier() in ksmbd_server_exit()
References
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/ksmbd/server.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "c053e389db0d892e2ff5a60ec5e533b976503795",
"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"versionType": "git"
},
{
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"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"versionType": "git"
},
{
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"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"versionType": "git"
},
{
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"status": "affected",
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{
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"status": "affected",
"version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/ksmbd/server.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.15"
},
{
"lessThan": "5.15",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.111",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.28",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.2.*",
"status": "unaffected",
"version": "6.2.15",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.3.*",
"status": "unaffected",
"version": "6.3.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.111",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.28",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.2.15",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.3.2",
"versionStartIncluding": "5.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.4",
"versionStartIncluding": "5.15",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: call rcu_barrier() in ksmbd_server_exit()\n\nracy issue is triggered the bug by racing between closing a connection\nand rmmod. In ksmbd, rcu_barrier() is not called at module unload time,\nso nothing prevents ksmbd from getting unloaded while it still has RCU\ncallbacks pending. It leads to trigger unintended execution of kernel\ncode locally and use to defeat protections such as Kernel Lockdown"
}
],
"providerMetadata": {
"dateUpdated": "2025-09-03T12:31:51.521Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795"
},
{
"url": "https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2"
},
{
"url": "https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6"
},
{
"url": "https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd"
},
{
"url": "https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5"
}
],
"title": "ksmbd: call rcu_barrier() in ksmbd_server_exit()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2023-32246",
"datePublished": "2025-08-16T13:22:09.212Z",
"dateReserved": "2023-05-05T10:00:07.894Z",
"dateUpdated": "2025-09-03T12:31:51.521Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2023-32246\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-16T14:15:26.393\",\"lastModified\":\"2025-08-18T20:16:28.750\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nksmbd: call rcu_barrier() in ksmbd_server_exit()\\n\\nracy issue is triggered the bug by racing between closing a connection\\nand rmmod. In ksmbd, rcu_barrier() is not called at module unload time,\\nso nothing prevents ksmbd from getting unloaded while it still has RCU\\ncallbacks pending. It leads to trigger unintended execution of kernel\\ncode locally and use to defeat protections such as Kernel Lockdown\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ksmbd: el problema de la llamada a rcu_barrier() en ksmbd_server_exit() desencadena el error al acelerarse entre el cierre de una conexi\u00f3n y rmmod. En ksmbd, rcu_barrier() no se llama al descargar el m\u00f3dulo, por lo que nada impide que ksmbd se descargue mientras a\u00fan tenga devoluciones de llamada de RCU pendientes. Esto provoca la ejecuci\u00f3n involuntaria de c\u00f3digo del kernel localmente y se utiliza para burlar protecciones como el bloqueo del kernel.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5a7090ccc242ab009ee7769e9d7fad6644dbe9bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b80422474ffe44cb5e813cd6da1f1c6bc50fd9d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c053e389db0d892e2ff5a60ec5e533b976503795\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d4174505016a3b2996eb7ff1530dcabbf15d47b6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb307d09fe15844fdaebeb8cc8c9b9e925430aa5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- 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.