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    CVE-2021-28951

    An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25.

    Published:Mar 4, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 20, 2021
    EPSS Score:0.00056
    CVSS Score:5.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    A250
    Vendor
    Netapp
    Product
    A250 Firmware
    Vendor
    Netapp
    Product
    Aff 500f
    Vendor
    Netapp
    Product
    Aff 500f Firmware
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Netapp
    Product
    Fas 500f
    Vendor
    Netapp
    Product
    Fas 500f Firmware
    Vendor
    Netapp
    Product
    Solidfire Baseboard Management Controller
    Vendor
    Netapp
    Product
    Solidfire Baseboard Management Controller Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-667 Improper Locking

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    References

    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3ebba796fa251d042be42b929a2d916ee5c34a49
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
    https://security.netapp.com/advisory/ntap-20210430-0003/
    https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3ebba796fa251d042be42b929a2d916ee5c34a49
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/
    https://security.netapp.com/advisory/ntap-20210430-0003/

    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