QUIC Unvalidated Amplification Credit may be Over Accounted

Issue summary: The OpenSSL QUIC server, when configured to not preform address validation, can be forced to count incoming packets multiple times in its unvalidated credit computation, leading to a violation of the RFC 9000 unvalidated connection amplification limit of 3 times the amount of data...

Excessive Memory Allocation in Relative CRLDP Processing

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

Non-Constant-Time SM2 Scalar Multiplication on ARM64 and RISC-V

Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption ...

Potential CPU DoS via O(n^2) Fragment Reassembly in QUIC

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-2026-109064

Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption ...

PT-2026-109061

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly...

FreeBSD-SA-26:68.openssl

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-26:68.openssl Security Advisory The FreeBSD Project Topic: Out-of-bounds read in OpenSSL DTLS retransmission Category: contrib Module: openssl Announced:...

OpenSSL Security Advisory 20260929

OpenSSL Security Advisory 20260929 - The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs t...

PT-2026-102921

Name of the Vulnerable Software and Affected Versions NetApp Products affected versions not specified FreeBSD affected versions not specified Description The IPv6 UDP send path for unconnected sockets fails to apply the jail policy that rewrites a loopback destination address to the primary IPv6...

PT-2026-102648

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description The OpenSSL QUIC server, when configured to skip address validation, incorrectly calculates the unvalidated credit limit. When processing a datagram containing multiple QUIC packets, the serv...

PT-2026-102653

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description A TLS server may experience an out-of-bounds read and a fixed-value out-of-bounds write on the server heap when calling the SSL set SSL CTX function to switch a connection to a different SSL...

PT-2026-109053

Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response. Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial o...

PT-2026-109025

Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response. Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial o...

PT-2026-109035

Issue summary: OpenSSL QUIC stack does not enforce connection level flow control for streams. Remote peers may send more bytes as long as they fit within the stream flow control limits. Impact summary: A malicious remote peer may exploit the lack of connection flow control for streams to make the...

FreeBSD Security Advisory - FreeBSD-SA-26:68.openssl

FreeBSD Security Advisory - Out-of-bounds read in OpenSSL DTLS retransmission. The retransmitted message may include heap memory contents, disclosing them to the DTLS peer as plaintext handshake data. If the read reaches unmapped memory, the application crashes, resulting in a Denial of Service D...

PT-2026-109089

Issue summary: A malicious remote peer may flood the local QUIC stack with NEW CONNECTION ID frames by avoiding a limit check on how many connection IDs the remote QUIC stack can use. Impact summary: The local QUIC stack sends a RETIRE CONN ID frame for every NEW CONNECTION ID frame it receives...

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...

CVE-2026-84783: Use After Free

Issue summary: The first concurrent use of the same X.509 certificate by several threads may cause its cached extension data to be freed while another thread is still using it. Impact summary: A remote, unauthenticated peer could crash a multi-threaded TLS client, or a multi-threaded TLS server...

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-2026-109010

Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response. Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial o...