fkie_cve-2017-8246
Vulnerability from fkie_nvd
Published
2017-05-12 20:29
Modified
2025-04-20 01:37
Severity ?
Summary
In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned substream->runtime->private_data. Later, prtd is freed. However, prtd is not sanitized and set to NULL, resulting in a dangling pointer. There are other functions that access the same memory (substream->runtime->private_data) with a NULL check, such as msm_pcm_volume_ctl_put(), which means this freed memory could be used.
References
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned substream-\u003eruntime-\u003eprivate_data. Later, prtd is freed. However, prtd is not sanitized and set to NULL, resulting in a dangling pointer. There are other functions that access the same memory (substream-\u003eruntime-\u003eprivate_data) with a NULL check, such as msm_pcm_volume_ctl_put(), which means this freed memory could be used."
},
{
"lang": "es",
"value": "En la funci\u00f3n msm_pcm_playback_close() en todas las versiones de Android de CAF usando el kernel de Linux, prtd es asignado a substream-)runtime-)private_data. M\u00e1s tarde, prtd es liberado. Sin embargo, prtd no est\u00e1 saneado y se ajusta a NULL, resultando en un puntero colgante. Hay otras funciones que acceden a la misma memoria (substream-)runtime-)private_data) con una comprobaci\u00f3n NULL, tal y como en la funci\u00f3n msm_pcm_volume_ctl_put(), lo que significa que se puede usar esta memoria liberada."
}
],
"id": "CVE-2017-8246",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-05-12T20:29:00.437",
"references": [
{
"source": "product-security@qualcomm.com",
"tags": [
"Vendor Advisory"
],
"url": "https://source.android.com/security/bulletin/2017-07-01"
},
{
"source": "product-security@qualcomm.com",
"tags": [
"Broken Link"
],
"url": "https://www.codeaurora.org/use-after-free-alsa-pcm-playback-kernel-module-cve-2017-8246"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://source.android.com/security/bulletin/2017-07-01"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Broken Link"
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"url": "https://www.codeaurora.org/use-after-free-alsa-pcm-playback-kernel-module-cve-2017-8246"
}
],
"sourceIdentifier": "product-security@qualcomm.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
- 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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