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CVE-2024-56764 – Ubuntu Linux Use-After-Free

The following table lists the changes that have been made to the
CVE-2024-56764 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

    Jan. 06, 2025

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

    ublk: detach gendisk from ublk device if add_disk() fails

    Inside ublk_abort_requests(), gendisk is grabbed for aborting all
    inflight requests. And ublk_abort_requests() is called when exiting
    the uring context or handling timeout.

    If add_disk() fails, the gendisk may have been freed when calling
    ublk_abort_requests(), so use-after-free can be caused when getting
    disk’s reference in ublk_abort_requests().

    Fixes the bug by detaching gendisk from ublk device if add_disk() fails.
    Added Reference https://git.kernel.org/stable/c/75cd4005da5492129917a4a4ee45e81660556104
    Added Reference https://git.kernel.org/stable/c/7d680f2f76a3417fdfc3946da7471e81464f7b41
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