RLSA-2026:47756 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux...

SUSE CVE-2026-55653

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

RLSA-2026:47755 Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

ALSA-2026:47757 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

ALSA-2026:47755 Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects TS3100/TS3200 (CVE-2015-4000)

Summary The Logjam Attack on TLS connections using the Diffie-Hellman DH key exchange protocol affects TS3100/TS3200. Vulnerability Details CVEID: CVE-2015-4000 DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a...

OPENSUSE-SU-2026:21444-1 Security update for libssh

This update for libssh fixes the following issues: - CVE-2026-15370: stack buffer overflow in SFTP server longname construction bsc1272162. - CVE-2026-59843: denial of service via zero advertised channel packet size bsc1272164. - CVE-2026-59844: denial of service via oversized SFTP read length...

CVE-2026-64319 nvmet-auth: validate reply message payload bounds against transfer length

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bounds against transfer length nvmetauthreply accesses the variable-length rval array using attacker-controlled hl hash length and dhvlen DH value length fields without verifying they fi...

SUSE-SU-2026:22919-1 Security update for libgcrypt

This update for libgcrypt fixes the following issue - CVE-2026-41989: heap-based buffer overflow when processing crafted ECDH ciphertext can lead to a denial of service bsc1262684...

FFC-DH Peer Validation Uses Attacker-Supplied q

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SUSE-SU-2026:22826-1 Security update for libgcrypt

This update for libgcrypt fixes the following issue - CVE-2026-41989: crafted ECDH ciphertext can lead denial of service bsc1262684...

SUSE-SU-2026:22760-1 Security update for libgcrypt

This update for libgcrypt fixes the following issue - CVE-2026-41989: crafted ECDH ciphertext can lead denial of service bsc1262684...

OESA-2026-2891 edk2 security update

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. Security Fixes: Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A...

Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

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openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

CVE-2026-7830

UltraVNC through 1.8.2.2 uses inadequate cryptography in the MS-Logon II authentication scheme rfbUltraVNCMsLogonIIAuth. In rfb/dh.cpp the Diffie-Hellman key exchange is performed with parameters that fit in an unsigned 64-bit integer DHMAXBITS controls the prime size. A 64-bit DH key can be brok...