CVE-2026-55655

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack ca...

CVE-2026-55655

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack ca...

CVE-2026-55655 Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack ca...

PT-2026-51473

Name of the Vulnerable Software and Affected Versions OpenSSH affected versions not specified Description A flaw in OpenSSH allows a local unprivileged attacker on a Linux client host to hijack client-side X11 forwarding connections. This occurs when X11 forwarding is enabled and a local...

postgresql: PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation

A flaw was found in PostgreSQL. Uncontrolled recursion during SSL Secure Sockets Layer and GSS Generic Security Service negotiation allows an attacker to achieve a sustained denial of service. This can be exploited by an attacker with access to a PostgreSQL AFUNIX socket. If SSL and GSS are both...

Expired Pointer Dereference

Overview CoreWCF.UnixDomainSocket is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Expired Pointer Dereference in...

CoreWCF: UnixDomainSocket Non-Reentrant POSIX Identity Resolution

Impact Race condition in POSIX peer identity resolution may attribute one connection’s identity to another getpwuid/getgrgid non-reentrant and may crash the host process under contention. Patches Fixed in CoreWCF v1.8.1 and v1.9.1 Workarounds Restrict UDS filesystem permissions so that only trust...

GHSA-Q6V9-43V5-JV9Q CoreWCF: UnixDomainSocket Non-Reentrant POSIX Identity Resolution

Impact Race condition in POSIX peer identity resolution may attribute one connection’s identity to another getpwuid/getgrgid non-reentrant and may crash the host process under contention. Patches Fixed in CoreWCF v1.8.1 and v1.9.1 Workarounds Restrict UDS filesystem permissions so that only trust...

GHSA-WJPQ-6766-7F5J CoreWCF: Unix Domain Socket PosixIdentity transport accepts connections that skip the security upgrade

Impact A CoreWCF service hosted on Unix Domain Sockets with the PosixIdentity client credential type UnixDomainSocketBinding with Security.Mode = TransportCredentialOnly and Security.Transport.ClientCredentialType = PosixIdentity does not require the client to perform the application/unixposix...

Missing Authentication for Critical Function

Overview CoreWCF.UnixDomainSocket is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Missing Authentication for Critical Function...

CoreWCF: Unix Domain Socket PosixIdentity transport accepts connections that skip the security upgrade

Impact A CoreWCF service hosted on Unix Domain Sockets with the PosixIdentity client credential type UnixDomainSocketBinding with Security.Mode = TransportCredentialOnly and Security.Transport.ClientCredentialType = PosixIdentity does not require the client to perform the application/unixposix...

PT-2026-51069

Name of the Vulnerable Software and Affected Versions CoreWCF versions prior to 1.8.1 CoreWCF versions prior to 1.9.1 Description An unauthenticated remote attacker can trigger premature EOF End of File handling during the framing handshake of the net.tcp, net.pipe, or net.uds components. This...

PT-2026-51075

Name of the Vulnerable Software and Affected Versions CoreWCF versions prior to 1.8.1 CoreWCF versions prior to 1.9.1 Description CoreWCF UnixDomainSocket POSIX peer identity resolution utilizes non-reentrant getpwuid and getgrgid calls. This creates a race condition where concurrent connections...

PT-2026-51073

Name of the Vulnerable Software and Affected Versions CoreWCF versions prior to 1.8.1 CoreWCF versions prior to 1.9.1 Description A CoreWCF service hosted on Unix Domain Sockets using PosixIdentity client credentials may accept connections that bypass the application/unixposix stream upgrade befo...

postgresql: PostgreSQL: Denial of Service via uncontrolled recursion in SSL/GSS negotiation

A flaw was found in PostgreSQL. Uncontrolled recursion during SSL Secure Sockets Layer and GSS Generic Security Service negotiation allows an attacker to achieve a sustained denial of service. This can be exploited by an attacker with access to a PostgreSQL AFUNIX socket. If SSL and GSS are both...

Missing Release of Resource after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime in the nettyunixsocketrecvFd function. An attacker can cause file descriptor leaks by sending two file descriptors at once via a Unix domain socket, leading to resource exhaustion and...

PT-2026-47181

Albatross-console doesn't properly terminate when looping over the ringbuffer. This leads to denial of service and memory exhaustion. Scenario A user that has access to albatross-console either via the unix domain socket requires root:albatross by default or via albatross-tls-endpoint requires a...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: spice-vdagent (UTSA-2026-016611)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016611 advisory. A flaw was found in the way the spice-vdagentd daemon handled file transfers from the host system to the virtual machine. Any unprivileged local guest user with acce...

Unity Linux 20.1050e / 20.1060e / 20.1070-8ae / 20.1070e Security Update: spice-vdagent (UTSA-2026-016615)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016615 advisory. A flaw was found in the spice-vdagentd daemon, where it did not properly handle client connections that can be established via the UNIX domain socket in...

SUSE CVE-2026-43016

In the Linux kernel, the following vulnerability has been resolved: bpf: sockmap: Fix use-after-free of sk-sksocket in skpsockverdictdataready. syzbot reported use-after-free of AFUNIX socket's sk-sksocket in skpsockverdictdataready. 0 In unixstreamsendmsg, the peer socket's -skdataready is calle...