CVE-2025-38504 – Linux Kernel io_uring ZCRX Use After Free

The following table lists the changes that have been made to the
CVE-2025-38504 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

    Aug. 16, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    io_uring/zcrx: fix pp destruction warnings

    With multiple page pools and in some other cases we can have allocated
    niovs on page pool destruction. Remove a misplaced warning checking that
    all niovs are returned to zcrx on io_pp_zc_destroy(). It was reported
    before but apparently got lost.

    Added Reference https://git.kernel.org/stable/c/203817de269539c062724d97dfa5af3cdf77a3ec
    Added Reference https://git.kernel.org/stable/c/ad9f1b5bed082b9c910e2a24bae0286a70846909
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