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pid namespaces

About this tag
The pid namespaces tag on WindowsForum.com covers Linux kernel security issues related to process identifier (PID) namespace handling. Recent content discusses CVE-2025-40178, a vulnerability where a missing null-pointer check in the PID namespace code can cause a kernel NULL pointer dereference, leading to an OOPS or panic. The flaw affects the pid_nr_ns function when task_active_pid_ns(current) returns NULL. This tag is relevant for system administrators and developers working with Linux containers or namespaces who need to understand kernel-level PID namespace vulnerabilities and their impact on system stability.
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    Linux Kernel CVE-2025-40178 Patch Fixes NULL Pointer in PID Namespace

    A kernel null‑pointer check that was missing in the Linux PID namespace handling has been fixed upstream after being cataloged as CVE‑2025‑40178 — the flaw can cause a kernel NULL pointer dereference in pid_nr_ns when task_active_pid_ns(current) returns NULL, producing an OOPS or panic and an...
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    • cve 2025 40178 kernel patch linux kernel pid namespaces
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    • Forum: Security Alerts
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