CVE-2020-25668

high

Description

A flaw was found in Linux Kernel because access to the global variable fg_console is not properly synchronized leading to a use after free in con_font_op.

References

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=90bfdeef83f1d6c696039b6a917190dcbbad3220

https://www.openwall.com/lists/oss-security/2020/10/30/1,

http://www.openwall.com/lists/oss-security/2020/11/04/3

https://bugzilla.redhat.com/show_bug.cgi?id=1893287,

http://www.openwall.com/lists/oss-security/2020/10/30/1

https://www.openwall.com/lists/oss-security/2020/11/04/3,

https://security.netapp.com/advisory/ntap-20210702-0005/

Details

Source: MITRE

Published: 2021-05-26

Updated: 2022-05-13

Type: CWE-362

Risk Information

CVSS v2

Base Score: 6.9

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

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH