DeutschShown in its original language — a full translation is planned for a future version.
OpenSSL: Mehrere Schwachstellen
view advisory published 2026-09-29
Ein Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren und einen Denial-of-Service-Zustand zu verursachen.
01
describes (14)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-84784US | — | — | ||
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 u… | ||||
| CVE-2026-84783US | — | — | ||
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.
Im… | ||||
| CVE-2026-84782US | — | — | ||
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… | ||||
| CVE-2026-77696US | — | — | ||
Issue summary: SM2 signature generation uses non-constant-time arithmetic
on secret values, forming a timing side-channel.
Impact summary: An attacker able to measure SM2 signing… | ||||
| CVE-2026-75806US | — | — | ||
Issue summary: An established DTLS 1.2 association using an AEAD cipher suite
can be terminated by a single unauthenticated datagram whose encrypted
fragment is shorter than the ma… | ||||
| CVE-2026-75805US | — | — | ||
Issue summary: A CMP client that requests certificate revocation on the basis
of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when
processing a crafted rev… | ||||
| CVE-2026-75804US | — | — | ||
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 li… | ||||
| CVE-2026-72897US | — | — | ||
Issue summary: A TLS server that calls SSL_set_SSL_CTX() to switch a
connection to a different SSL_CTX part way through a handshake may access
memory beyond the end of an internal… | ||||
| CVE-2026-54875US | — | — | ||
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… | ||||
| CVE-2026-54873US | — | — | ||
Issue summary: QUIC process may keep memory for QUIC packet
buffer for much longer period than necessary.
Impact summary: Remote peer can exploit this vulnerability
by sending mal… | ||||
| CVE-2026-54872US | — | — | ||
Issue summary: The generic elliptic-curve scalar multiplication used for
ECDSA and SM2 signature operations with curves that do not have a dedicated
implementation leaks informatio… | ||||
| CVE-2026-42772US | — | — | ||
Issue summary: The QUIC stream reassembly algorithm performance deteriorates
progressively as packets are arriving out of order. The worst case has
a quadratic complexity proportio… | ||||
| CVE-2026-35191US | — | — | ||
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 computat… | ||||
| CVE-2026-35189US | — | — | ||
Issue summary: A certificate with many nameRelativeToCRLIssuer CRL
distribution points causes disproportionate heap growth when OpenSSL caches
X.509 extensions.
Impact summary: Re… | ||||
02
references
External citations — patches, advisories, analysis.
- Oracle Linux Security Advisory ELSA-2026-80510 vom 2026-10-12external
- Oracle Linux Security Advisory ELSA-2026-80514 vom 2026-10-12external
- Red Hat Security Advisory RHSA-2026:74162 vom 2026-10-01external
- Red Hat Security Advisory RHSA-2026:74166 vom 2026-10-01external
- Red Hat Security Advisory RHSA-2026:76918 vom 2026-10-08external
- Red Hat Security Advisory RHSA-2026:77396 vom 2026-10-08external
- Red Hat Security Advisory RHSA-2026:80510 vom 2026-10-12external
- Red Hat Security Advisory RHSA-2026:80514 vom 2026-10-12external
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