cvedb.io
CVE-2025-21836
MEDIUM · CVSS 5.5
EPSS exploitation probability: 0%
Published 2025-03-07T09:15:16.600 · Last modified 2026-06-17T08:44:24.577

Summary

In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: reallocate buf lists on upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field should stay stable after publish. Always reallocate it instead.

Affected products

linux — linux_kernel

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.