CVE-2020-27830 (GCVE-0-2020-27830)
Vulnerability from cvelistv5 – Published: 2021-05-13 14:15 – Updated: 2024-08-04 16:25
VLAI
EPSS
VEX
Summary
A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without checking whether it is NULL or not, and may lead to a NULL-ptr deref crash.
Severity
5.5 (Medium)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2020/12/08/1 | mailing-listx_refsource_MLIST |
| http://www.openwall.com/lists/oss-security/2020/12/08/4 | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2021/dsa-4843 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://bugzilla.redhat.com/show_bug.cgi?id=1919900 | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021062… | x_refsource_CONFIRM |
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"current_release_date": "2026-06-28T06:35:31+00:00",
"cve": "CVE-2020-27830",
"id": "CVE-2020-27830",
"initial_release_date": "2020-11-30T00:00:00+00:00",
"product_status:known_not_affected": "93",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: null pointer dereference in in spk_ttyio_receive_buf2",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-27830.json",
"version": "3"
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"cve": "CVE-2020-27830",
"id": "CVE-2020-27830",
"initial_release_date": "2023-02-15T03:52:16Z",
"product_status:known_affected": "300",
"product_status:known_not_affected": "282",
"product_status:recommended": "955",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-27830",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-27830.json",
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}
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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.
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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