Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-27820

A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.7, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 5 products from linux, from fedoraproject, from oracle and 2 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-11-03T00:15:07.550

Last Modified

2024-11-21T05:21:52.430

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:N/I:N/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

6.9

Weaknesses

Type: Secondary
CWE-416
Type: Secondary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 5.4.162	Yes
Operating System	linux	linux_kernel	< 5.10.82	Yes
Operating System	linux	linux_kernel	< 5.15.5	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	fedoraproject	fedora	33	Yes
Application	oracle	communications_cloud_native_core_binding_support_function	22.1.3	Yes
Application	oracle	communications_cloud_native_core_network_exposure_function	22.1.1	Yes
Application	oracle	communications_cloud_native_core_policy	22.2.0	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901726 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/ Mailing List, Vendor Advisory ([email protected])
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/ Mailing List, Vendor Advisory ([email protected])
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/ Mailing List, Vendor Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1901726 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/ Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/ Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/ Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujul2022.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.