Executive Summary

Informations
Name CVE-2020-25656 First vendor Publication 2020-12-02
Vendor Cve Last vendor Modification 2020-12-18

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Overall CVSS Score 4.1
Base Score 4.1 Environmental Score 4.1
impact SubScore 3.6 Temporal Score 4.1
Exploitabality Sub Score 0.5
 
Attack Vector Local Attack Complexity High
Privileges Required High User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:P/I:N/A:N)
Cvss Base Score 1.9 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 3.4 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25656

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 3362
Os 2

Sources (Detail)

Source Url
MISC https://bugzilla.redhat.com/show_bug.cgi?id=1888726
https://lkml.org/lkml/2020/10/16/84
https://lkml.org/lkml/2020/10/29/528
MLIST https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

Alert History

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Date Informations
2021-01-14 01:32:11
  • Multiple Updates
2021-01-13 01:31:03
  • Multiple Updates
2020-12-18 17:22:47
  • Multiple Updates
2020-12-15 00:22:48
  • Multiple Updates
2020-12-12 09:22:47
  • Multiple Updates
2020-12-11 05:22:47
  • Multiple Updates
2020-12-08 21:24:17
  • Multiple Updates
2020-12-05 05:22:52
  • Multiple Updates
2020-12-03 01:32:50
  • Multiple Updates
2020-12-03 01:30:45
  • Multiple Updates
2020-12-02 17:22:50
  • Multiple Updates
2020-12-02 09:22:56
  • First insertion