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CVE-2025-37798 – Linux Kernel Sch FQ Codel Queue Overflow Vulnerability

The following table lists the changes that have been made to the
CVE-2025-37798 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. 02, 2025

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

    codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()

    After making all ->qlen_notify() callbacks idempotent, now it is safe to
    remove the check of qlen!=0 from both fq_codel_dequeue() and
    codel_qdisc_dequeue().
    Added Reference https://git.kernel.org/stable/c/2f9761a94bae33d26e6a81b31b36e7d776d93dc1
    Added Reference https://git.kernel.org/stable/c/342debc12183b51773b3345ba267e9263bdfaaef
    Added Reference https://git.kernel.org/stable/c/4d55144b12e742404bb3f8fee6038bafbf45619d
    Added Reference https://git.kernel.org/stable/c/829c49b6b2ff45b043739168fd1245e4e1a91a30
    Added Reference https://git.kernel.org/stable/c/a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31
    Added Reference https://git.kernel.org/stable/c/e73c838c80dccb9e4f19becc11d9f3cb4a27d483
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