FKIE_CVE-2019-19768
Vulnerability from fkie_nvd - Published: 2019-12-12 20:15 - Updated: 2026-06-17 02:27
Severity
Summary
In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer).
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | 5.4.0 | |
| linux | linux_kernel | 5.4.0 | |
| linux | linux_kernel | 5.4.0 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.4.0:*:*:*:*:*:*:*",
"matchCriteriaId": "19F0AF6E-E2DF-4D4C-840E-7B66D0A2B2A3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.4.0:rc1:*:*:*:*:*:*",
"matchCriteriaId": "13BDAE24-5AE5-4E68-A325-18C8383BBDFD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.4.0:rc2:*:*:*:*:*:*",
"matchCriteriaId": "CF8CE461-5227-46BC-B913-3BF09141554E",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub-buffer)."
},
{
"lang": "es",
"value": "En el kernel de Linux versi\u00f3n 5.4.0-rc2, se presenta un uso de la memoria previamente liberada en la funci\u00f3n __blk_add_trace en el archivo kernel/trace/blktrace.c (que se usa para completar una estructura blk_io_trace y colocarla en un per-cpu sub-buffer)."
}
],
"id": "CVE-2019-19768",
"lastModified": "2026-06-17T02:27:12.880",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2019-12-12T20:15:17.663",
"references": [
{
"source": "cve@mitre.org",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=205711"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
},
{
"source": "cve@mitre.org",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
},
{
"source": "cve@mitre.org",
"url": "https://security.netapp.com/advisory/ntap-20200103-0001/"
},
{
"source": "cve@mitre.org",
"url": "https://usn.ubuntu.com/4342-1/"
},
{
"source": "cve@mitre.org",
"url": "https://usn.ubuntu.com/4344-1/"
},
{
"source": "cve@mitre.org",
"url": "https://usn.ubuntu.com/4345-1/"
},
{
"source": "cve@mitre.org",
"url": "https://usn.ubuntu.com/4346-1/"
},
{
"source": "cve@mitre.org",
"url": "https://www.debian.org/security/2020/dsa-4698"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00039.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.kernel.org/show_bug.cgi?id=205711"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://security.netapp.com/advisory/ntap-20200103-0001/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://usn.ubuntu.com/4342-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://usn.ubuntu.com/4344-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://usn.ubuntu.com/4345-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://usn.ubuntu.com/4346-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.debian.org/security/2020/dsa-4698"
}
],
"sourceIdentifier": "cve@mitre.org",
"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.
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- 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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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