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    CVE-2025-21760

    In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a potential UAF.

    Published:Feb 27, 2025
    Last Modified:Jul 30, 2026
    EPS:Feb 27, 2025
    EPSS Score:0.095
    CVSS Score:8.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://git.kernel.org/stable/c/04e05112f10354ffc3bb6cc796d553bab161594c
    https://git.kernel.org/stable/c/10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1
    https://git.kernel.org/stable/c/4d576202b90b1b95a7c428a80b536f91b8201bcc
    https://git.kernel.org/stable/c/789230e5a8c1097301afc802e242c79bc8835c67
    https://git.kernel.org/stable/c/a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d
    https://git.kernel.org/stable/c/ae38982f521621c216fc2f5182cd091f4734641d
    https://git.kernel.org/stable/c/e24d225e4cb8cf108bde00b76594499b98f0a74d
    https://git.kernel.org/stable/c/ed6ae1f325d3c43966ec1b62ac1459e2b8e45640
    https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
    https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
    https://cert-portal.siemens.com/productcert/html/ssa-019113.html
    https://cert-portal.siemens.com/productcert/html/ssa-265688.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High