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CVE-2025-38617 – Linux Kernel Packet Netdev Up Event Race Condition

The following table lists the changes that have been made to the
CVE-2025-38617 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. 22, 2025

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

    net/packet: fix a race in packet_set_ring() and packet_notifier()

    When packet_set_ring() releases po->bind_lock, another thread can
    run packet_notifier() and process an NETDEV_UP event.

    This race and the fix are both similar to that of commit 15fe076edea7
    (“net/packet: fix a race in packet_bind() and packet_notifier()”).

    There too the packet_notifier NETDEV_UP event managed to run while a
    po->bind_lock critical section had to be temporarily released. And
    the fix was similarly to temporarily set po->num to zero to keep
    the socket unhooked until the lock is retaken.

    The po->bind_lock in packet_set_ring and packet_notifier precede the
    introduction of git history.
    Added Reference https://git.kernel.org/stable/c/01d3c8417b9c1b884a8a981a3b886da556512f36
    Added Reference https://git.kernel.org/stable/c/7de07705007c7e34995a5599aaab1d23e762d7ca
    Added Reference https://git.kernel.org/stable/c/88caf46db8239e6471413d28aabaa6b8bd552805
    Added Reference https://git.kernel.org/stable/c/e50ccfaca9e3c671cae917dcb994831a859cf588
    Added Reference https://git.kernel.org/stable/c/f1791fd7b845bea0ce9674fcf2febee7bc87a893
    Added Reference https://git.kernel.org/stable/c/f2e8fcfd2b1bc754920108b7f2cd75082c5a18df
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