FKIE_CVE-2024-36932
Vulnerability from fkie_nvd - Published: 2024-05-30 16:15 - Updated: 2026-06-17 07:37
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
Since thermal_debug_cdev_remove() does not run under cdev->lock, it can
run in parallel with thermal_debug_cdev_state_update() and it may free
the struct thermal_debugfs object used by the latter after it has been
checked against NULL.
If that happens, thermal_debug_cdev_state_update() will access memory
that has been freed already causing the kernel to crash.
Address this by using cdev->lock in thermal_debug_cdev_remove() around
the cdev->debugfs value check (in case the same cdev is removed at the
same time in two different threads) and its reset to NULL.
Cc :6.8+ <stable@vger.kernel.org> # 6.8+
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/thermal/thermal_debugfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "c1279dee33369e2525f532364bb87207d23b9481",
"status": "affected",
"version": "755113d7678681a137c330f7997ceb680adb644e",
"versionType": "git"
},
{
"lessThan": "d351eb0ab04c3e8109895fc33250cebbce9c11da",
"status": "affected",
"version": "755113d7678681a137c330f7997ceb680adb644e",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/thermal/thermal_debugfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"version": "6.8.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "linux_kernel",
"vendor": "linux",
"versions": [
{
"lessThan": "c1279dee3336",
"status": "affected",
"version": "755113d76786",
"versionType": "custom"
},
{
"lessThan": "d351eb0ab04c",
"status": "affected",
"version": "755113d76786",
"versionType": "custom"
},
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "6.8.10"
},
{
"status": "unaffected",
"version": "6.9"
}
]
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B0D3E543-9D44-48EC-AEFE-B1F1DE163D83",
"versionEndExcluding": "6.8.10",
"versionStartIncluding": "6.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Prevent use-after-free from occurring after cdev removal\n\nSince thermal_debug_cdev_remove() does not run under cdev-\u003elock, it can\nrun in parallel with thermal_debug_cdev_state_update() and it may free\nthe struct thermal_debugfs object used by the latter after it has been\nchecked against NULL.\n\nIf that happens, thermal_debug_cdev_state_update() will access memory\nthat has been freed already causing the kernel to crash.\n\nAddress this by using cdev-\u003elock in thermal_debug_cdev_remove() around\nthe cdev-\u003edebugfs value check (in case the same cdev is removed at the\nsame time in two different threads) and its reset to NULL.\n\nCc :6.8+ \u003cstable@vger.kernel.org\u003e # 6.8+"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Thermal/debugfs: evita que se produzca use after free despu\u00e9s de la eliminaci\u00f3n de cdev. Dado que Thermal_debug_cdev_remove() no se ejecuta bajo cdev-\u0026gt;lock, puede ejecutarse en paralelo con Thermal_debug_cdev_state_update() y puede liberar el objeto struct Thermal_debugfs utilizado por este \u00faltimo despu\u00e9s de haberlo verificado con NULL. Si eso sucede, Thermal_debug_cdev_state_update() acceder\u00e1 a la memoria que ya ha sido liberada, lo que provocar\u00e1 que el kernel falle. Solucione esto usando cdev-\u0026gt;lock en Thermal_debug_cdev_remove() alrededor de la verificaci\u00f3n del valor de cdev-\u0026gt;debugfs (en caso de que el mismo cdev se elimine al mismo tiempo en dos subprocesos diferentes) y se restablezca a NULL. CC :6.8+ # 6.8+"
}
],
"id": "CVE-2024-36932",
"lastModified": "2026-06-17T07:37:23.513",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-36932",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-07T14:04:33.823483Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-30T16:15:16.383",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/c1279dee33369e2525f532364bb87207d23b9481"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d351eb0ab04c3e8109895fc33250cebbce9c11da"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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