logo_clicknbuy.png

CVE-2025-21836 – Linux Kernel IoUring Buffer Reuse Vulnerability

The following table lists the changes that have been made to the
CVE-2025-21836 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Mar. 07, 2025

    Action Type Old Value New Value
    Added Description 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.
    Added Reference https://git.kernel.org/stable/c/146a185f6c05ee263db715f860620606303c4633
    Added Reference https://git.kernel.org/stable/c/2a5febbef40ce968e295a7aeaa5d5cbd9e3e5ad4
    Added Reference https://git.kernel.org/stable/c/7d0dc28dae836caf7645fef62a10befc624dd17b
    Added Reference https://git.kernel.org/stable/c/8802766324e1f5d414a81ac43365c20142e85603
Share the Post:

Related Posts