CVE-2020-28941

Public on 2020-12-08
Modified on 2021-01-13
Description
An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.
Severity
Medium
CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 kernel 2020-12-08 20:55 ALAS2-2020-1566
Amazon Linux 1 kernel 2021-01-12 22:51 ALAS-2021-1461

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Amazon Linux CVSSv2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C
NVD CVSSv2 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C
NVD CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H