Executive Summary

Informations
Name CVE-2020-25220 First vendor Publication 2020-09-10
Vendor Cve Last vendor Modification 2020-10-01

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 7.8
Base Score 7.8 Environmental Score 7.8
impact SubScore 5.9 Temporal Score 7.8
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25220

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 3242

Sources (Detail)

Source Url
CONFIRM https://security.netapp.com/advisory/ntap-20201001-0004/
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1868453
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=li...
https://www.spinics.net/lists/stable/msg405099.html

Alert History

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Date Informations
2020-10-01 21:23:09
  • Multiple Updates
2020-09-25 01:28:31
  • Multiple Updates
2020-09-15 00:22:50
  • Multiple Updates
2020-09-10 09:22:48
  • First insertion