CVE-2021-45485

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    CVE-2021-45485

    Published: 25 Dec 2021Last Modified: 15 Mar 2026

    Summary:

    Details: In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.

    References: https://arxiv.org/pdf/2112.09604.pdf, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3, https://security.netapp.com/advisory/ntap-20220121-0001/, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99, https://www.oracle.com/security-alerts/cpujul2022.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-45485 | CVE-DB