CVE-2021-20219

2021-03-2316:34:00

CWE-697

redhat

www.cve.org

denial of service

linux kernel

n_tty_receive_char_special

local attacker privilege

system availability

AI Score

6.7

Confidence

High

EPSS

0.001

Percentile

25.6%

JSON

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.

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "kernel 4.18"
      }
    ]
  }
]