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    CVE-2018-13093

    An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image. This occurs because of a lack of proper validation that cached inodes are free during allocation.

    Published:Apr 12, 2018
    Last Modified:Nov 21, 2024
    EPS:Jul 3, 2018
    EPSS Score:0.00136
    CVSS Score:5.5

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

    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://access.redhat.com/errata/RHSA-2019:2029
    https://access.redhat.com/errata/RHSA-2019:2043
    https://bugzilla.kernel.org/show_bug.cgi?id=199367
    https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff
    https://github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff
    https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
    https://usn.ubuntu.com/4094-1/
    https://usn.ubuntu.com/4118-1/
    https://access.redhat.com/errata/RHSA-2019:2029
    https://access.redhat.com/errata/RHSA-2019:2043
    https://bugzilla.kernel.org/show_bug.cgi?id=199367
    https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff
    https://github.com/torvalds/linux/commit/afca6c5b2595fc44383919fba740c194b0b76aff
    https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
    https://usn.ubuntu.com/4094-1/
    https://usn.ubuntu.com/4118-1/

    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