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    <title>Most recent entries from all</title>
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    <lastBuildDate>Fri, 13 Nov 2026 10:21:07 +0000</lastBuildDate>
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      <title>CVE-2026-95108 — Deleting a user-mode module thread leaks its privileged kernel stack</title>
      <link>https://db.gcve.eu/vuln/cve-2026-95108</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Eclipse Foundation Eclipse ThreadX&lt;/p&gt;
&lt;p&gt;One logical thread of a user-mode ThreadX module costs the Module Manager&amp;#39;s shared object pool two allocations, not one. The module asks for a `TX_THREAD` control block through `txm_module_object_allocate`; `_txm_module_manager_thread_create` then takes a second allocation of `TXM_MODULE_KERNEL_STACK_SIZE` bytes for the privileged kernel stack that thread&amp;#39;s system calls run on, and records it in the control block. Both come from `_txm_module_manager_object_pool` and both are linked onto the module&amp;#39;s allocation list.&lt;/p&gt;
&lt;p&gt;The Module Manager&amp;#39;s thread-delete dispatcher released only the first. The kernel stack stayed allocated until the whole module was stopped, so a module that creates, terminates and deletes threads in a loop — every state transition valid, every service returning `TX_SUCCESS` — removed a fixed block from a finite pool shared by the manager and by every other loaded module, on every cycle, for as long as it stayed loaded. Once the pool is exhausted, no memory-protected module can create any kernel object and no user-mode module thread can be created anywhere in the system.&lt;/p&gt;
&lt;p&gt;Vulnerable function: `_txm_module_manager_tx_thread_delete_dispatch`, in `common_modules/module_manager/inc/txm_module_manager_dispatch.h`.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Eclipse Foundation Eclipse ThreadX&lt;/p&gt;
&lt;p&gt;One logical thread of a user-mode ThreadX module costs the Module Manager&amp;#39;s shared object pool two allocations, not one. The module asks for a `TX_THREAD` control block through `txm_module_object_allocate`; `_txm_module_manager_thread_create` then takes a second allocation of `TXM_MODULE_KERNEL_STACK_SIZE` bytes for the privileged kernel stack that thread&amp;#39;s system calls run on, and records it in the control block. Both come from `_txm_module_manager_object_pool` and both are linked onto the module&amp;#39;s allocation list.&lt;/p&gt;
&lt;p&gt;The Module Manager&amp;#39;s thread-delete dispatcher released only the first. The kernel stack stayed allocated until the whole module was stopped, so a module that creates, terminates and deletes threads in a loop — every state transition valid, every service returning `TX_SUCCESS` — removed a fixed block from a finite pool shared by the manager and by every other loaded module, on every cycle, for as long as it stayed loaded. Once the pool is exhausted, no memory-protected module can create any kernel object and no user-mode module thread can be created anywhere in the system.&lt;/p&gt;
&lt;p&gt;Vulnerable function: `_txm_module_manager_tx_thread_delete_dispatch`, in `common_modules/module_manager/inc/txm_module_manager_dispatch.h`.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-95108</guid>
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