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    CVE-2020-15852

    An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.

    Published:Jul 16, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 20, 2020
    EPSS Score:0.0016
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Netapp
    Product
    Solidfire Baseboard Management Controller
    Vendor
    Netapp
    Product
    Steelstore Cloud Integrated Storage
    Vendor
    Xen
    Product
    Xen

    Exploits

    No exploit reference

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    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