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CVE-2026-33999

Опубликовано: 23 апр. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 7.8

Описание

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

РелизСтатусПримечание
devel

not-affected

code not present
esm-infra-legacy/xenial

not-affected

code not present
esm-infra/bionic

not-affected

code not present
esm-infra/focal

not-affected

code not present
esm-infra/xenial

not-affected

code not present
jammy

not-affected

code not present
noble

not-affected

code not present
questing

not-affected

code not present
resolute

not-affected

code not present
upstream

not-affected

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra-legacy/xenial

not-affected

code not present
esm-infra/xenial

not-affected

code not present
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

not-affected

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

not-affected

code not present
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

not-affected

Показывать по

РелизСтатусПримечание
devel

needs-triage

esm-infra-legacy/trusty

needs-triage

esm-infra-legacy/xenial

needs-triage

esm-infra/bionic

needs-triage

esm-infra/focal

needs-triage

esm-infra/xenial

ignored

end of ESM support, was needs-triage
jammy

needs-triage

noble

needs-triage

questing

ignored

end of life, was needs-triage
resolute

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra-legacy/xenial

needs-triage

esm-infra/xenial

ignored

end of ESM support, was needs-triage
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

needs-triage

jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

jammy

needs-triage

noble

needs-triage

questing

ignored

end of life, was needs-triage
resolute

needs-triage

upstream

needs-triage

Показывать по

EPSS

Процентиль: 30%
0.0038
Низкий

7.8 High

CVSS3

Связанные уязвимости

CVSS3: 7.8
redhat
3 месяца назад

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

CVSS3: 7.8
nvd
3 месяца назад

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

msrc
3 месяца назад

Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

CVSS3: 7.8
debian
3 месяца назад

A flaw was found in the X.Org X server. This integer underflow vulnera ...

CVSS3: 7.8
github
3 месяца назад

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

EPSS

Процентиль: 30%
0.0038
Низкий

7.8 High

CVSS3

Уязвимость CVE-2026-33999