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CVE-2020-27825

Public on 2020-12-11
Modified on 2021-02-19
Description

A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel. 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.

Severity
Medium
See what this means
CVSS v3 Base Score
6.7
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2021-02-16 00:13 ALAS-2021-1480
Amazon Linux 2 - Core kernel 2021-02-17 18:07 ALAS2-2021-1600
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-20 19:56 ALAS2KERNEL-5.4-2022-020

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD CVSSv2 5.4 AV:L/AC:M/Au:N/C:P/I:N/A:C
NVD CVSSv3 5.7 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H