CVE-2025-21686

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: require cloned buffers to share accounting contexts When IORINGREGISTERCLONEBUFFERS is used to clone buffers from uring instance A to uring instance B, where A and B use different MMs for accounting, the accounting...

CVE-2025-21686

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority...

CVE-2025-21686

Removed by vendor...

CVE-2025-21686

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CVE-2025-21686

The initial CVE-2025-21686 entry is marked as rejected, but connected sources describe a real Linux kernel issue related to io_uring: when cloning buffers between uring instances A and B that use different memory accounting contexts, closing A before B can decrement B’s pinned memory counters, po...