CVE-2020-25668 Information

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.

CVSS Vector

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

Reference

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/

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.0