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CVE-2025-38211 is a use-after-free vulnerability in the Linux kernel RDMA iWARP Connection Manager. Work objects associated with cm_id_private are allocated by alloc_work_entries() during connection-manager identifier creation and freed by dealloc_work_entries() when all identifier references are removed. If an event-handler work item drops the final cm_id reference, its own work object can be freed while the kernel workqueue still accesses it. A previous fix that flushed pending work during cm_id destruction did not eliminate this remaining lifetime-management flaw. The issue produces a KASAN slab-use-after-free report in __pwq_activate_work and can potentially disrupt the system.
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A use-after-free vulnerability in the Linux kernel's RDMA iWARP connection manager. When an event-handler work item releases the final reference to a connection-management ID, its work object can be freed while still being used by the workqueue infrastructure. The listed CVSS v3 score is 7.8, with local access and low privileges required and potential high impacts on confidentiality, integrity, and availability. The recommended remediation is to update the affected Google COS kernel packages to version 18613.339.11 or later.
A Linux kernel RDMA/iwcm use-after-free vulnerability involving work objects after cm_id destruction, addressed by the Rocky Linux 8 security update.
A Linux kernel RDMA/iwcm use-after-free vulnerability caused by work objects being freed when the final cm_id reference is decremented from an event-handler work context. It can result in memory corruption and potentially affect confidentiality, integrity, and availability for local authenticated attackers.
A locally exploitable vulnerability requiring low privileges and no user interaction, with high impact to confidentiality, integrity, and availability according to the supplied CVSS v3 vector.
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Cross-references every affected SKU, including bundled OEM variants.
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