fkie_cve-2020-29534
Vulnerability from fkie_nvd
Published
2020-12-03 20:15
Modified
2024-11-21 05:24
Severity ?
Summary
An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://bugs.chromium.org/p/project-zero/issues/detail?id=2089 | Exploit, Issue Tracking, Patch, Third Party Advisory | |
| cve@mitre.org | https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3 | Patch, Vendor Advisory | |
| cve@mitre.org | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff | Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://bugs.chromium.org/p/project-zero/issues/detail?id=2089 | Exploit, Issue Tracking, Patch, Third Party Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3 | Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff | Patch, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 5.10 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "174CDCDD-F2CB-4BB5-8B6E-995AB530D834",
"versionEndExcluding": "5.8.18",
"versionStartIncluding": "5.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C3A40FCF-3E31-4750-9F29-AC10A7A87A73",
"versionEndExcluding": "5.9.3",
"versionStartIncluding": "5.9.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*",
"matchCriteriaId": "9DD7EB1D-064C-4DB9-AD34-D8EF78312C17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94."
},
{
"lang": "es",
"value": "Se detect\u00f3 un problema en el kernel de Linux versiones anteriores a 5.9.3, io_uring toma una referencia non-refcounted al files_struct del proceso que envi\u00f3 una petici\u00f3n, causando que la funci\u00f3n execve() optimice incorrectamente la funci\u00f3n unshare_fd(), tambi\u00e9n se conoce como CID-0f2122045b94"
}
],
"id": "CVE-2020-29534",
"lastModified": "2024-11-21T05:24:09.480",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.2,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 10.0,
"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": "2020-12-03T20:15:11.947",
"references": [
{
"source": "cve@mitre.org",
"tags": [
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"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=2089"
},
{
"source": "cve@mitre.org",
"tags": [
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"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3"
},
{
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"tags": [
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{
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],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"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.
- 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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