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CVE-2025-37997 – Netfilter Ipset Region Locking Vulnerability

The following table lists the changes that have been made to the
CVE-2025-37997 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. 29, 2025

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

    netfilter: ipset: fix region locking in hash types

    Region locking introduced in v5.6-rc4 contained three macros to handle
    the region locks: ahash_bucket_start(), ahash_bucket_end() which gave
    back the start and end hash bucket values belonging to a given region
    lock and ahash_region() which should give back the region lock belonging
    to a given hash bucket. The latter was incorrect which can lead to a
    race condition between the garbage collector and adding new elements
    when a hash type of set is defined with timeouts.
    Added Reference https://git.kernel.org/stable/c/6e002ecc1c8cfdfc866b9104ab7888da54613e59
    Added Reference https://git.kernel.org/stable/c/82c1eb32693bc48251d92532975e19160987e5b9
    Added Reference https://git.kernel.org/stable/c/8478a729c0462273188263136880480729e9efca
    Added Reference https://git.kernel.org/stable/c/a3dfec485401943e315c394c29afe2db8f9481d6
    Added Reference https://git.kernel.org/stable/c/aa77294b0f73bb8265987591460cd25b8722c3df
    Added Reference https://git.kernel.org/stable/c/e2ab67672b2288521a6146034a971f9a82ffc5c5
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