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    CVE-2021-44879

    In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

    Published:Feb 12, 2022
    Last Modified:Nov 21, 2024
    EPS:Feb 13, 2022
    EPSS Score:0.00063
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    https://bugzilla.kernel.org/show_bug.cgi?id=215231https://bugzilla.kernel.org/show_bug.cgi?id=215231

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    https://bugzilla.kernel.org/show_bug.cgi?id=215231
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f
    https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
    https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
    https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/
    https://bugzilla.kernel.org/show_bug.cgi?id=215231
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f
    https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
    https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
    https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/

    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