CVE-2026-23309

CVE-2026-23309 refers to a Linux kernel vulnerability in the tracing subsystem. The issue was a NULL pointer dereference in trigger_data_free() when data->cmd_ops->set_filter is evaluated after a failed trigger_data_alloc() and returning NULL. The root cause was that trigger_data_free() did...

CVE-2026-23309 tracing: Add NULL pointer check to trigger_data_free()

In the Linux kernel, the following vulnerability has been resolved: tracing: Add NULL pointer check to triggerdatafree If triggerdataalloc fails and returns NULL, eventhisttriggerparse jumps to the outfree error path. While kfree safely handles a NULL pointer, triggerdatafree does not. This cause...

CVE-2026-23309

In the Linux kernel, the following vulnerability has been resolved: tracing: Add NULL pointer check to triggerdatafree If triggerdataalloc fails and returns NULL, eventhisttriggerparse jumps to the outfree error path. While kfree safely handles a NULL pointer, triggerdatafree does not. This cause...

SUSE-SU-2026:20931-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues. The following security issues were fixed: - CVE-2025-39753: gfs2: Set .migratefolio in gfs2rgrp,metaaops bsc1249590. - CVE-2025-39964: crypto: afalg - Disallow concurrent writes in afalgsendmsg bsc1251966. -...

SUSE-SU-2026:21284-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues. The following security issues were fixed: - CVE-2025-39753: gfs2: Set .migratefolio in gfs2rgrp,metaaops bsc1249590. - CVE-2025-39964: crypto: afalg - Disallow concurrent writes in afalgsendmsg bsc1251966. -...

CVE-2026-33249: Incorrect Authorization

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.11.0 and prior to versions 2.11.15 and 2.12.6, a valid client which uses message tracing headers can indicate that the trace messages can be sent to an arbitrary valid subject,...

CVE-2026-23309: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: tracing: Add NULL pointer check to triggerdatafree If triggerdataalloc fails and returns NULL, eventhisttriggerparse jumps to the outfree error path. While kfree safely handles a NULL pointer, triggerdatafree does not. This cause...

The vulnerability of the lookup_rec() function in the kernel/trace/ftrace.c module, which supports Linux operating system tracing, allows an attacker to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the lookuprec function in the kernel/trace/ftrace.c module, which supports kernel tracing in Linux operating systems, is related to the repeated use of previously freed memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity,...

The vulnerability of the `ftrace_func_mapper_add_ip()` function in the kernel/trace/ftrace.c module, which supports kernel tracing in Linux operating systems, allows a hacker to cause a service failure.

The vulnerability of the ftracefuncmapperaddip function in the kernel/trace/ftrace.c module, which supports kernel tracing in Linux operating systems, is related to improper control of resource identifiers “resource injection”. Exploiting this vulnerability could allow an attacker to trigger a...

The vulnerability of the __remove_instance() function in the kernel/trace/trace.c module, which supports Linux kernel tracing, allows a malicious actor to cause a service failure.

The vulnerability of the removeinstance function in the kernel/trace/trace.c module, which supports Linux kernel tracing, is related to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to cause a service failure...

The vulnerability of the osnoise_cpus_write() function in the kernel/trace/trace_osnoise.c module, which supports Linux kernel tracing, allows a hacker to cause a service failure.

The vulnerability of the osnoisecpuswrite function in the kernel/trace/traceosnoise.c module, which supports kernel tracing in Linux operating systems, relates to reading beyond the buffer boundaries. Exploiting this vulnerability could allow an attacker to cause a service failure...

Linux Distros Unpatched Vulnerability : CVE-2026-23374

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - blktrace: fix thiscpuread/write in preemptible context tracingrecordcmdline internally uses thiscpuread and thiscpuwrite on the per-CPU variable tracecmdlinesav...

Linux Distros Unpatched Vulnerability : CVE-2026-23380

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tracing: Fix WARNON in tracingbuffersmmapclose When a process forks, the child process copies the parent's VMAs but the usermapped reference count is not...

CVE-2026-23390: Out-of-bounds Write

In the Linux kernel, the following vulnerability has been resolved: tracing/dma: Cap dmamapsg tracepoint arrays to prevent buffer overflow The dmamapsg tracepoint can trigger a perf buffer overflow when tracing large scatter-gather lists. With devices like virtio-gpu creating large DRM buffers,...

NATS: Message tracing can be redirected to arbitrary subject

Background NATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing. The nats-server supports telemetry on messages, using the per-message NATS headers. Problem Description A valid client which uses message...

Incorrect Authorization

Overview github.com/nats-io/nats-server/v2/server is an A simple, secure and performant communications system for digital systems, services and devices. Affected versions of this package are vulnerable to Incorrect Authorization in the handling of message tracing headers. An attacker can redirect...

GHSA-8M2X-3M6Q-6W8J NATS: Message tracing can be redirected to arbitrary subject

Background NATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing. The nats-server supports telemetry on messages, using the per-message NATS headers. Problem Description A valid client which uses message...

PT-2026-27622

Name of the Vulnerable Software and Affected Versions NATS-Server versions prior to 2.11.15 NATS-Server versions prior to 2.12.6 Description NATS-Server, a high-performance server for NATS.io, is affected by an issue where a valid client utilizing message tracing headers can direct trace messages...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2023-53817: crypto: lib/mpi - avoid null pointer deref in mpicmpui bsc1254992. CVE-2025-39748: bpf: Forget ranges when refining tnum after JSET bsc1249587...

Auditing MCP Servers for Over-Privileged Tool Capabilities

The Model Context Protocol MCP has emerged as a standard for connecting Large Language Models LLMs to external tools and data. However, MCP servers often expose privileged capabilities, such as file system access, network requests, and command execution that can be exploited if not properly...