The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix a refcount leak in     attach_perf_ctx_data() The attach_perf_ctx_data() can race on global and !global cases. The global case is     protected by global_ctx_data_rwsem and shares a single reference count using perf_ctx_data.global field.
    But when it races with !global case, it may miss to set the global field and result in a reference count     leak. CPU1 CPU2 ----------------------------------------------------------------     attach_task_ctx_data(.global=1) attach_task_ctx_data(.global=0) cd1 = alloc_perf_ctx_data(); cd2 =     alloc_perf_ctx_data(); // { .global = 0, .refcount = 1 }; try_cmpxchg(); // success, //     task->perf_ctx_data = cd2 try_cmpxhg(); // fail; old = cd2 refcount_inc_not_zero(&old->refcount); //     success // old.refcount = 2 free_perf_ctx_data(cd1); Then later detach_global_ctx_data() will see the data     but it's not marked as global, so it won't call detach_task_ctx_data(). (CVE-2026-98552)

Note that Nessus relies on the presence of the package as reported by the vendor.

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Linux Distros Unpatched Vulnerability : CVE-2026-98552

high Nessus Plugin ID 367566

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.4 Nov 7, 2026, 10:50 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202611071050
Version 1.3 Nov 4, 2026, 12:13 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202611041213
Version 1.2 Oct 22, 2026, 12:02 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202610220002
Version 1.1 Oct 20, 2026, 8:26 AM New Plugin Feed: 202610200826