VULNERABILITY INTELLIGENCE

CVE-2021-20219

CVSS score5.5 MEDIUM
EPSS probability0.40%
CISA KEVNot currently listed
Published2021-03-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

A denial of service vulnerability was found in n_tty_receive_char_special in drivers/tty/n_tty.c of the Linux kernel. In this flaw a local attacker with a normal user privilege could delay the loop (due to a changing ldata->read_head, and a missing sanity check) and cause a threat to the system availability.

Weakness classification

  • secalert@redhat.com: CWE-697

Primary references