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CVE-2026-31790

Опубликовано: 07 апр. 2026
Источник: ubuntu
Приоритет: medium
CVSS3: 7.5

Описание

Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker i...

РелизСтатусПримечание
devel

needed

esm-apps-legacy/xenial

not-affected

3.0+ only
esm-apps/bionic

not-affected

3.0+ only
esm-apps/xenial

not-affected

3.0+ only
esm-infra/focal

not-affected

3.0+ only
jammy

not-affected

3.0+ only
noble

needed

questing

ignored

end of life, was needed
resolute

needed

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

not-affected

uses system openssl
esm-apps-legacy/xenial

not-affected

3.0+ only
esm-apps/bionic

not-affected

3.0+ only
esm-apps/focal

not-affected

uses system openssl
esm-apps/jammy

not-affected

3.0+ only
esm-apps/noble

not-affected

uses system openssl
esm-apps/resolute

not-affected

uses system openssl
esm-apps/xenial

not-affected

3.0+ only
esm-infra-legacy/trusty

not-affected

uses system openssl
jammy

not-affected

3.0+ only

Показывать по

РелизСтатусПримечание
devel

released

3.5.5-1ubuntu3
esm-infra-legacy/trusty

not-affected

3.0+ only
esm-infra-legacy/xenial

not-affected

3.0+ only
esm-infra/bionic

not-affected

3.0+ only
esm-infra/focal

not-affected

3.0+ only
esm-infra/xenial

not-affected

3.0+ only
fips-preview/jammy

needs-triage

fips-updates/bionic

not-affected

3.0+ only
fips-updates/focal

not-affected

3.0+ only
fips-updates/jammy

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

fips-preview/jammy

needs-triage

fips-updates/jammy

needs-triage

fips-updates/noble

needs-triage

jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

РелизСтатусПримечание
devel

DNE

esm-infra/bionic

not-affected

3.0+ only
jammy

DNE

noble

DNE

questing

DNE

resolute

DNE

upstream

needs-triage

Показывать по

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 5.9
redhat
4 месяца назад

Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker i...

CVSS3: 7.5
nvd
4 месяца назад

Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker i

CVSS3: 6.5
msrc
4 месяца назад

Incorrect Failure Handling in RSA KEM RSASVE Encapsulation

CVSS3: 7.5
debian
4 месяца назад

Issue summary: Applications using RSASVE key encapsulation to establis ...

CVSS3: 7.5
redos
18 дней назад

Уязвимость python-relenv

7.5 High

CVSS3

Уязвимость CVE-2026-31790