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    CVE-2024-27390

    In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.

    Published:May 1, 2024
    Last Modified:Jul 24, 2026
    EPS:May 1, 2024
    EPSS Score:0.00223
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c
    https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373
    https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88
    https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7
    https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50
    https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04
    https://git.kernel.org/stable/c/bfd2f3c58ad86ad33db80515e6c3503e0414e44b
    https://git.kernel.org/stable/c/17ef8efc00b34918b966388b2af0993811895a8c
    https://git.kernel.org/stable/c/26d4bac55750d535f1f0b8790dc26daf6089e373
    https://git.kernel.org/stable/c/5da9a218340a2bc804dc4327e5804392e24a0b88
    https://git.kernel.org/stable/c/7eb06ee5921189812e6b4bfe7b0f1e878be16df7
    https://git.kernel.org/stable/c/9d159d6637ccce25f879d662a480541ef4ba3a50
    https://git.kernel.org/stable/c/a03ede2282ebbd181bd6f5c38cbfcb5765afcd04

    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