openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler

A flaw was found in OpenSSL's QUIC PATHCHALLENGE handler. A remote attacker can exploit this vulnerability by flooding a QUIC client or server with specially crafted PATHCHALLENGE frames. This leads to unbounded memory allocation within the local QUIC stack, as the system continuously allocates...

openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler

A flaw was found in OpenSSL's QUIC PATHCHALLENGE handler. A remote attacker can exploit this vulnerability by flooding a QUIC client or server with specially crafted PATHCHALLENGE frames. This leads to unbounded memory allocation within the local QUIC stack, as the system continuously allocates...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : OpenSSL vulnerabilities (USN-8414-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8414-1 advisory. Frank Buss discovered that OpenSSL had a heap buffer over-read in ASN.1 content parsing. An attacker could possibly use...

RHEL 10 : openssl (RHSA-2026:25237)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25237 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

Important: openssl security update

OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength general-purpose cryptography library. Security Fixes: openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing CVE-2026-73...

RHEL 9 : openssl (RHSA-2026:25239)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25239 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

CVE-2026-10740

Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service degraded availability by sending crafted QUIC Initial packets. To remediate this issue, users should upgrade to v1.8.2...

CVE-2026-10740 Excessive memory allocation in s2n-quic

Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service degraded availability by sending crafted QUIC Initial packets. To remediate this issue, users should upgrade to v1.8.2...

CVE-2026-10740 Excessive memory allocation in s2n-quic

Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service degraded availability by sending crafted QUIC Initial packets. To remediate this issue, users should upgrade to v1.8.2...

CVE-2026-10740 Excessive memory allocation in s2n-quic

Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service degraded availability by sending crafted QUIC Initial packets. To remediate this issue, users should upgrade to v1.8.2...

CVE-2026-10740

CVE-2026-10740 affects s2n-quic prior to version 1.8.2, where an unbounded memory allocation in the CRYPTO frame reassembler can allow an unauthenticated remote actor to trigger a denial of service (degraded availability) by sending crafted QUIC Initial packets. The vulnerability is triggered dur...

CVE-2026-42764

A flaw was found in the OpenSSL QUIC Quick UDP Internet Connections server. A remote attacker could send a specially crafted QUIC initial packet with an invalid token. If the server's address validation is explicitly disabled, this could lead to a NULL pointer dereference, causing the server...

CVE-2026-34183

A flaw was found in OpenSSL's QUIC PATHCHALLENGE handler. A remote attacker can exploit this vulnerability by flooding a QUIC client or server with specially crafted PATHCHALLENGE frames. This leads to unbounded memory allocation within the local QUIC stack, as the system continuously allocates...

ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake

A flaw was found in ngtcp2, a C implementation of the IETF QUIC Quick UDP Internet Connections protocol. A remote attacker can exploit a stack buffer overflow vulnerability by sending specially crafted, large transport parameters during the QUIC handshake. This occurs when the qlog callback is...

Linux Distros Unpatched Vulnerability : CVE-2026-34183

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: Remote peer may exhaust heap memory of the QUIC server or client by flooding it with packets containing PATHCHALLENGE frames. Impact summary: A...

RHEL 9 : samba (RHSA-2026:25049)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25049 advisory. Samba is an open-source implementation of the Server Message Block SMB protocol and the related Common Internet File System CIFS protocol,...

Linux Distros Unpatched Vulnerability : CVE-2026-42764

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation...

s2n-quic 安全漏洞

s2n-quic is a high-performance QUIC protocol implementation library open source by Amazon Web Services. Versions of s2n-quic prior to 1.8.2 contained security vulnerabilities. These vulnerabilities stemmed from unbounded memory allocation in theCRYPTO frame reassembler, which could allow...

PT-2026-48517

Name of the Vulnerable Software and Affected Versions s2n-quic versions prior to 1.8.2 Description Unbounded memory allocation in the CRYPTO frame reassembler allows an unauthenticated remote actor to cause a denial of service, resulting in degraded availability, by sending crafted QUIC Initial...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the QUIC stack, when flooded with PATHCHALLENGE frames. A malicious remote peer can exhaust heap memory and terminate a QUIC client or server. Remediation Upgrade openssl to versio...