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    CVE-2025-39853

    In the Linux kernel, the following vulnerability has been resolved: i40e: Fix potential invalid access when MAC list is empty list_first_entry() never returns NULL - if the list is empty, it still returns a pointer to an invalid object, leading to potential invalid memory access when dereferenced. Fix this by using list_first_entry_or_null instead of list_first_entry.

    Published:Sep 19, 2025
    Last Modified:May 12, 2026
    EPS:Sep 19, 2025
    EPSS Score:0.00011
    CVSS Score:7.1

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    References

    https://git.kernel.org/stable/c/1eadabcf5623f1237a539b16586b4ed8ac8dffcd
    https://git.kernel.org/stable/c/3c6fb929afa313d9d11f780451d113f73922fe5d
    https://git.kernel.org/stable/c/66e7cdbda74ee823ec2bf7b830ebd235c54f5ddf
    https://git.kernel.org/stable/c/971feafe157afac443027acdc235badc6838560b
    https://git.kernel.org/stable/c/9c21fc4cebd44dd21016c61261a683af390343f8
    https://git.kernel.org/stable/c/a556f06338e1d5a85af0e32ecb46e365547f92b9
    https://git.kernel.org/stable/c/e2a5e74879f9b494bbd66fa93f355feacde450c7
    https://git.kernel.org/stable/c/fb216d980fae6561c7c70af8ef826faf059c6515
    https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    https://cert-portal.siemens.com/productcert/html/ssa-032379.html
    https://cert-portal.siemens.com/productcert/html/ssa-089022.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