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CVE-2021-20219

Опубликовано: 23 мар. 2021
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS2: 2.1
CVSS3: 5.5

Описание

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.

РелизСтатусПримечание
bionic

not-affected

devel

not-affected

esm-infra-legacy/trusty

not-affected

esm-infra/bionic

not-affected

esm-infra/focal

not-affected

esm-infra/xenial

not-affected

focal

not-affected

groovy

not-affected

precise/esm

not-affected

trusty

ignored

end of standard support

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

ignored

was not-affected (Red Hat specific) ESM criteria
esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

not-affected

Red Hat specific
esm-infra/xenial

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

ignored

end of standard support

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-aws-5.3
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-aws-5.4
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

esm-infra/xenial

not-affected

Red Hat specific
focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

ignored

was not-affected (Red Hat specific) ESM criteria
esm-infra/bionic

ignored

superseded by linux-azure-5.3
esm-infra/focal

not-affected

Red Hat specific
esm-infra/xenial

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

ignored

end of standard support

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-azure-5.4
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-azure-5.3
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-gcp-5.3
esm-infra/focal

not-affected

Red Hat specific
esm-infra/xenial

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-gcp-5.4
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-gcp-5.3
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support, was not-affected
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

end of life, was not-affected
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support, was not-affected
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

replaced by linux-hwe-5.4
esm-infra/focal

DNE

esm-infra/xenial

not-affected

Red Hat specific
focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-hwe-5.4
esm-infra/focal

DNE

esm-infra/xenial

ignored

superseded by linux-hwe
focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

not-affected

Red Hat specific
esm-infra/xenial

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

ignored

end of life, was not-affected
trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

ignored

was not-affected (Red Hat specific) ESM criteria
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

ignored

end of standard support
trusty/esm

ignored

end of ESM support, was ignored [was not-affected (Red Hat specific) ESM criteria]
upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support, was not-affected
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

end of life, was not-affected
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support, was not-affected
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

not-affected

Red Hat specific
esm-infra/xenial

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-oracle-5.3
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

ignored

end of standard support
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

ignored

superseded by linux-oracle-5.4
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

DNE

esm-infra/focal

not-affected

Red Hat specific
focal

not-affected

Red Hat specific
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/bionic

not-affected

Red Hat specific
esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

ignored

replaced by linux-raspi
focal

ignored

end of standard support, was ignored [replaced by linux-raspi]
groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

DNE

devel

not-affected

Red Hat specific
esm-infra-legacy/trusty

DNE

esm-infra/focal

ignored

end of life, was not-affected
focal

ignored

end of life, was not-affected
groovy

not-affected

Red Hat specific
precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

РелизСтатусПримечание
bionic

not-affected

Red Hat specific
devel

DNE

esm-infra-legacy/trusty

DNE

esm-infra/focal

DNE

focal

DNE

groovy

DNE

precise/esm

DNE

trusty

DNE

trusty/esm

DNE

upstream

not-affected

Red Hat specific

Показывать по

EPSS

Процентиль: 10%
0.00037
Низкий

2.1 Low

CVSS2

5.5 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.5
redhat
около 7 лет назад

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.

CVSS3: 5.5
nvd
около 4 лет назад

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.

CVSS3: 5.5
debian
около 4 лет назад

A denial of service vulnerability was found in n_tty_receive_char_spec ...

github
около 3 лет назад

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.

CVSS3: 5.5
fstec
больше 4 лет назад

Уязвимость функции n_tty_receive_char_special ядра операционных систем Linux, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 10%
0.00037
Низкий

2.1 Low

CVSS2

5.5 Medium

CVSS3

Уязвимость CVE-2021-20219