pypacker

General information This is Pypacker: The fastest and simplest low-level packet manipulation library for Python. See below examples for what you can do with it. If you want to support this project you can via PayPal. What you can do with Pypacker Create custom Packets via keywords or from raw byt...

CLEANSTART-2026-DX09334 Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order

CVE-2026-42772 affects multiple packages. Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. See references for individual vulnerability details...

Ubuntu 26.04 LTS : OpenSSL vulnerabilities (USN-8861-1)

The remote Ubuntu 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8861-1 advisory. It was discovered that OpenSSL had an inefficient algorithm in its QUIC stream reassembly implementation. A remote attacker could possibly use this issue...

USN-8861-1 openssl vulnerabilities

It was discovered that OpenSSL had an inefficient algorithm in its QUIC stream reassembly implementation. A remote attacker could possibly use this issue to cause OpenSSL to use excessive CPU resources, leading to a denial of service. CVE-2026-42772 It was discovered that OpenSSL did not properly...

openssl: openssl: Denial of Service via inefficient QUIC stream reassembly

A flaw was found in OpenSSL. A remote attacker who establishes a QUIC network connection can cause a Denial of Service DoS by sending specially sequenced, out-of-order stream frames. Because the stream reassembly mechanism handles non-sequential data fragments inefficiently, processing these fram...

openssl: openssl: Denial of Service via inefficient QUIC stream reassembly

A flaw was found in OpenSSL. A remote attacker who establishes a QUIC network connection can cause a Denial of Service DoS by sending specially sequenced, out-of-order stream frames. Because the stream reassembly mechanism handles non-sequential data fragments inefficiently, processing these fram...

Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the QUIC stream reassembly, which holds fragments in a doubly linked list optimized for appends and searches it head to tail when a fragment arrives out of order. An attacker can consume CPU...

CVE-2026-42772

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

CVE-2026-42772

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

UBUNTU-CVE-2026-42772

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

EUVD-2026-89003

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

CVE-2026-42772

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

CVE-2026-42772: Inefficient Algorithmic Complexity

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

PT-2026-109103

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream data. Impact summary: A remote QUIC pee...

Linux Distros Unpatched Vulnerability : CVE-2026-42772

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic...

CVE-2026-45765 Suricata dnp3: unbounded reassembly can lead to resource exhaustion

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, DNP3 reassembly could buffer data without sufficient parser-level bounds. Crafted DNP3 traffic may cause Suricata to consume excessive memory,...

RUSTSEC-2026-0341 Stream reassembly memory-exhaustion guard in quinn-proto can be bypassed

The fix for RUSTSEC-2026-0185 in 0.11.15 added a cap on the number of chunks buffered by the Assembler that reassembles out-of-order stream data. However, the cap was only checked inside the branch that triggers defragmentation, which only runs when the estimated over-allocation exceeds a thresho...

Quinn: Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly

Summary The Assembler component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a RecvStream in order through an AsyncRead impl for example will be sensitive to peers that send fragments whil...

GHSA-4W2J-M93H-CJ5J Quinn: Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly

Summary The Assembler component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a RecvStream in order through an AsyncRead impl for example will be sensitive to peers that send fragments whil...

CVE-2026-25800

Quinn-quic: The Assembler handling unordered stream fragments can cause high memory overhead and potential memory exhaustion for non-contiguous fragments when reading RecvStream via AsyncRead, in versions 0.1.0 through 0.11.14. The issue arises from overhead in defragmentation of fragments with g...