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CVE-2022-49920 – Linux kernel Netfilter Netlink Notifier Race Condition

The following table lists the changes that have been made to the
CVE-2022-49920 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. 01, 2025

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

    netfilter: nf_tables: netlink notifier might race to release objects

    commit release path is invoked via call_rcu and it runs lockless to
    release the objects after rcu grace period. The netlink notifier handler
    might win race to remove objects that the transaction context is still
    referencing from the commit release path.

    Call rcu_barrier() to ensure pending rcu callbacks run to completion
    if the list of transactions to be destroyed is not empty.
    Added Reference https://git.kernel.org/stable/c/1ffe7100411a8b9015115ce124cd6c9c9da6f8e3
    Added Reference https://git.kernel.org/stable/c/d4bc8271db21ea9f1c86a1ca4d64999f184d4aae
    Added Reference https://git.kernel.org/stable/c/e40b7c44d19e327ad8b49a491ef1fa8dcc4566e0
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