cve 2025 40178

About this tag
CVE-2025-40178 is a Linux kernel vulnerability involving a missing null-pointer check in PID namespace handling. The flaw can cause a kernel NULL pointer dereference in pid_nr_ns when task_active_pid_ns(current) returns NULL, leading to an OOPS or system panic with immediate availability impact. A patch has been applied upstream to fix the issue. This tag covers discussion of the vulnerability, its technical details, and the associated fix for affected Linux systems.

  1. 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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