CVEvulnerability

CVE-2021-20219

5.5 MEDIUM Published 2021-03-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-697

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.

Affected configurations

• linux linux kernel (< 4.18)

Related

Weakness · CWE (1)

  • CWE-697 Incorrect Comparison weakness

References