CVE-2025-40194 (GCVE-0-2025-40194)
Vulnerability from cvelistv5
Published
2025-11-12 21:56
Modified
2025-11-12 21:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
cpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()
The cpufreq_cpu_put() call in update_qos_request() takes place too early
because the latter subsequently calls freq_qos_update_request() that
indirectly accesses the policy object in question through the QoS request
object passed to it.
Fortunately, update_qos_request() is called under intel_pstate_driver_lock,
so this issue does not matter for changing the intel_pstate operation
mode, but it theoretically can cause a crash to occur on CPU device hot
removal (which currently can only happen in virt, but it is formally
supported nevertheless).
Address this issue by modifying update_qos_request() to drop the
reference to the policy later.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 Version: da5c504c7aae96db68c4b38e2564a88e91842d89 |
||
{
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"vendor": "Linux",
"versions": [
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},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.301",
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},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.246",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.195",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.157",
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},
{
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"status": "unaffected",
"version": "6.6.113",
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},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.54",
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},
{
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"status": "unaffected",
"version": "6.17.4",
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},
{
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"status": "unaffected",
"version": "6.18-rc1",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()\n\nThe cpufreq_cpu_put() call in update_qos_request() takes place too early\nbecause the latter subsequently calls freq_qos_update_request() that\nindirectly accesses the policy object in question through the QoS request\nobject passed to it.\n\nFortunately, update_qos_request() is called under intel_pstate_driver_lock,\nso this issue does not matter for changing the intel_pstate operation\nmode, but it theoretically can cause a crash to occur on CPU device hot\nremoval (which currently can only happen in virt, but it is formally\nsupported nevertheless).\n\nAddress this issue by modifying update_qos_request() to drop the\nreference to the policy later."
}
],
"providerMetadata": {
"dateUpdated": "2025-11-12T21:56:32.025Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/15ac9579ebdaf22a37d7f60b3a8efc1029732ef9"
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{
"url": "https://git.kernel.org/stable/c/bc26564bcc659beb6d977cd6eb394041ec2f2851"
},
{
"url": "https://git.kernel.org/stable/c/ad4e8f9bdbef11a19b7cb93e7f313bf59bdcc3b4"
},
{
"url": "https://git.kernel.org/stable/c/0a58d3e77b22b087a57831c87cafd360e144a5bd"
},
{
"url": "https://git.kernel.org/stable/c/69a18ff6c60e8e113420f15355fad862cb45d38e"
},
{
"url": "https://git.kernel.org/stable/c/ba63d4e9857a72a89e71a4eff9f2cc8c283e94c3"
},
{
"url": "https://git.kernel.org/stable/c/57e4a6aadf12578b96a038373cffd54b3a58b092"
},
{
"url": "https://git.kernel.org/stable/c/69e5d50fcf4093fb3f9f41c4f931f12c2ca8c467"
}
],
"title": "cpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-40194",
"datePublished": "2025-11-12T21:56:32.025Z",
"dateReserved": "2025-04-16T07:20:57.178Z",
"dateUpdated": "2025-11-12T21:56:32.025Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-40194\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T22:15:46.427\",\"lastModified\":\"2025-11-14T16:42:30.503\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncpufreq: intel_pstate: Fix object lifecycle issue in update_qos_request()\\n\\nThe cpufreq_cpu_put() call in update_qos_request() takes place too early\\nbecause the latter subsequently calls freq_qos_update_request() that\\nindirectly accesses the policy object in question through the QoS request\\nobject passed to it.\\n\\nFortunately, update_qos_request() is called under intel_pstate_driver_lock,\\nso this issue does not matter for changing the intel_pstate operation\\nmode, but it theoretically can cause a crash to occur on CPU device hot\\nremoval (which currently can only happen in virt, but it is formally\\nsupported nevertheless).\\n\\nAddress this issue by modifying update_qos_request() to drop the\\nreference to the policy later.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0a58d3e77b22b087a57831c87cafd360e144a5bd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/15ac9579ebdaf22a37d7f60b3a8efc1029732ef9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/57e4a6aadf12578b96a038373cffd54b3a58b092\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/69a18ff6c60e8e113420f15355fad862cb45d38e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/69e5d50fcf4093fb3f9f41c4f931f12c2ca8c467\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ad4e8f9bdbef11a19b7cb93e7f313bf59bdcc3b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ba63d4e9857a72a89e71a4eff9f2cc8c283e94c3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bc26564bcc659beb6d977cd6eb394041ec2f2851\",\"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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