CVE-2020-27825 Information

Description

A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat.

CVSS Vector

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

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1905155 https://www.debian.org/security/2021/dsa-4843 https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.netapp.com/advisory/ntap-20210521-0008/

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.7