openssl: excessive memory use buffering DTLS records for a future epoch

A flaw was found in OpenSSL. Receiving a DTLS Datagram Transport Layer Security record for a future epoch while a handshake is in progress causes OpenSSL to buffer an excessive amount of memory. This allows a peer to cause memory exhaustion, eventually resulting in a denial of service, using a...

Asymmetric Resource Consumption (Amplification)

Overview Affected versions of this package are vulnerable to Asymmetric Resource Consumption Amplification in dtlsrlayerbufferrecord in ssl/record/methods/dtlsmeth.c. An attacker can cause a DTLS endpoint to retain excessive memory by sending a stream of small next-epoch records during an...

CVE-2026-54874

Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires. Impact summary: A peer can use a small amount of network traffic to make an OpenSSL DTLS endpoint retain a disproportionately large...

ALPINE-CVE-2026-54874

Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires. Impact summary: A peer can use a small amount of network traffic to make an OpenSSL DTLS endpoint retain a disproportionately large...

AZL-97668 CVE-2026-54874 affecting package openssl-fips-provider 3.1.2-2

Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires. Impact summary: A peer can use a small amount of network traffic to make an OpenSSL DTLS endpoint retain a disproportionately large...

CVE-2026-54874

Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires. Impact summary: A peer can use a small amount of network traffic to make an OpenSSL DTLS endpoint retain a disproportionately large...

CVE-2026-54874

CVE-2026-54874 is a memory amplification vulnerability in OpenSSL's DTLS implementation. When a handshake is in progress, OpenSSL buffers records belonging to a future epoch by retaining the full ~16 KB read buffer per record rather than only the actual record bytes. Up to 100 records per connect...

CVE-2026-54874

Excessive Memory Use Buffering DTLS Records for a Future Epoch...

OpenSSL 1.0.2 < 1.0.2zr Vulnerability

The version of OpenSSL installed on the remote host is prior to 1.0.2zr. It is, therefore, affected by a vulnerability as referenced in the 1.0.2zr advisory. - Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than...

OpenSSL: DTLS epoch record buffer memory DoS

The dtls1bufferrecord function in ssl/d1pkt.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allows remote attackers to cause a denial of service memory consumption via a large series of "future epoch" DTLS records that are buffered in a queue, aka "DTLS record buffer limitation bug."...