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CVE-2026-18798

Опубликовано: 25 авг. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 7.5

Описание

Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet. Impact summary: Double free leads to heap corruption, which typically results in termination of QUIC server process, leading to Denial of Service. There is so far no evidence that this double free is exploitable for remote code execution, thus it is considered highly improbable. CWE: CWE-415: Double Free Description: In order to validate initial packet, OpenSSL QUIC stack default packet handler (port_default_packet_handler()) creates a so-called QRX object. If the initial packet validates successfully with QRX object, the default packet handler proceeds to channel (connection object) creation. The QRX object used for packet validation is passed to port_bind_channel(), so it becomes part of the newly created connection. If port_bind_channel() fails, then it also frees the QRX object. Once port_bind_channel() returns, the port_default_packet_handler() detects th...

РелизСтатусПримечание
devel

needs-triage

esm-apps-legacy/xenial

not-affected

3.5+ only
esm-apps/bionic

not-affected

3.5+ only
esm-infra/focal

not-affected

3.5+ only
jammy

not-affected

3.5+ only
noble

not-affected

3.5+ only
resolute

needs-triage

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

needs-triage

jammy

DNE

noble

DNE

resolute

needs-triage

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system openssl
esm-apps-legacy/xenial

needs-triage

esm-apps/bionic

needs-triage

esm-apps/focal

not-affected

uses system openssl
esm-apps/jammy

not-affected

3.5+ only
esm-apps/noble

not-affected

uses system openssl
esm-apps/resolute

not-affected

uses system openssl
esm-infra-legacy/trusty

not-affected

uses system openssl
jammy

not-affected

3.5+ only
noble

not-affected

uses system openssl

Показывать по

РелизСтатусПримечание
devel

needed

esm-infra-legacy/trusty

not-affected

3.5+ only
esm-infra-legacy/xenial

not-affected

3.5+ only
esm-infra/bionic

not-affected

3.5+ only
esm-infra/focal

not-affected

3.5+ only
fips-preview/jammy

not-affected

3.5+ only
fips-updates/bionic

not-affected

3.5+ only
fips-updates/focal

not-affected

3.5+ only
fips-updates/jammy

not-affected

3.5+ only
fips-updates/xenial

not-affected

3.5+ only

Показывать по

РелизСтатусПримечание
devel

DNE

fips-preview/jammy

not-affected

3.5+ only
fips-updates/jammy

not-affected

3.5+ only
fips-updates/noble

not-affected

3.5+ only
jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

not-affected

3.5+ only
jammy

DNE

noble

DNE

resolute

DNE

upstream

needs-triage

Показывать по

EPSS

Процентиль: 73%
0.01481
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 7.5
redhat
26 дней назад

Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet. Impact summary: Double free leads to heap corruption, which typically results in termination of QUIC server process, leading to Denial of Service. There is so far no evidence that this double free is exploitable for remote code execution, thus it is considered highly improbable. CWE: CWE-415: Double Free Description: In order to validate initial packet, OpenSSL QUIC stack default packet handler (port_default_packet_handler()) creates a so-called QRX object. If the initial packet validates successfully with QRX object, the default packet handler proceeds to channel (connection object) creation. The QRX object used for packet validation is passed to port_bind_channel(), so it becomes part of the newly created connection. If port_bind_channel() fails, then it also frees the QRX object. Once port_bind_channel() returns, the port_default_packet_handler() detects t...

CVSS3: 7.5
nvd
25 дней назад

Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet. Impact summary: Double free leads to heap corruption, which typically results in termination of QUIC server process, leading to Denial of Service. There is so far no evidence that this double free is exploitable for remote code execution, thus it is considered highly improbable. CWE: CWE-415: Double Free Description: In order to validate initial packet, OpenSSL QUIC stack default packet handler (port_default_packet_handler()) creates a so-called QRX object. If the initial packet validates successfully with QRX object, the default packet handler proceeds to channel (connection object) creation. The QRX object used for packet validation is passed to port_bind_channel(), so it becomes part of the newly created connection. If port_bind_channel() fails, then it also frees the QRX object. Once port_bind_channel() returns, the port_default_packet_handler() detects t

CVSS3: 7.5
debian
25 дней назад

Issue summary: QUIC server may double free QRX (QUIC record layer RX) ...

CVSS3: 7.5
github
25 дней назад

Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet. Impact summary: Double free leads to heap corruption, which typically results in termination of QUIC server process, leading to Denial of Service. There is so far no evidence that this double free is exploitable for remote code execution, thus it is considered highly improbable. CWE: CWE-415: Double Free Description: In order to validate initial packet, OpenSSL QUIC stack default packet handler (port_default_packet_handler()) creates a so-called QRX object. If the initial packet validates successfully with QRX object, the default packet handler proceeds to channel (connection object) creation. The QRX object used for packet validation is passed to port_bind_channel(), so it becomes part of the newly created connection. If port_bind_channel() fails, then it also frees the QRX object. Once port_bind_channel() returns, the port_default_packet_handler() detect...

CVSS3: 7.5
fstec
26 дней назад

Уязвимость функции port_default_packet_handler() библиотеки OpenSSL, позволяющая нарушителю вызвать отказ в обслуживании

EPSS

Процентиль: 73%
0.01481
Низкий

7.5 High

CVSS3

Уязвимость CVE-2026-18798