CVE-2025-37823 – Linux Kernel Net-Sched HFSC Use-After-Free Vulnerability

The following table lists the changes that have been made to the
CVE-2025-37823 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

    May. 08, 2025

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

    net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

    Similarly to the previous patch, we need to safe guard hfsc_dequeue()
    too. But for this one, we don’t have a reliable reproducer.

    Added Reference https://git.kernel.org/stable/c/11bccb054c1462fb069219f8e98e97a5a730758e
    Added Reference https://git.kernel.org/stable/c/2f46d14919c39528c6e540ebc43f90055993eedc
    Added Reference https://git.kernel.org/stable/c/68f256305ceb426d545a0dc31f83c2ab1d211a1e
    Added Reference https://git.kernel.org/stable/c/6ccbda44e2cc3d26fd22af54c650d6d5d801addf
    Added Reference https://git.kernel.org/stable/c/76c4c22c2437d3d3880efc0f62eca06ef078d290
    Added Reference https://git.kernel.org/stable/c/c6936266f8bf98a53f28ef9a820e6a501e946d09
    Added Reference https://git.kernel.org/stable/c/c6f035044104c6ff656f4565cd22938dc892528c
    Added Reference https://git.kernel.org/stable/c/da7936518996d290e2fcfcaf6cd7e15bfd87804a
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