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    CVE-2017-15126

    A use-after-free flaw was found in fs/userfaultfd.c in the Linux kernel before 4.13.6. The issue is related to the handling of fork failure when dealing with event messages. Failure to fork correctly can lead to a situation where a fork event will be removed from an already freed list of events with userfaultfd_ctx_put().

    Published:Dec 5, 2017
    Last Modified:Nov 21, 2024
    EPS:Jan 14, 2018
    EPSS Score:0.01153
    CVSS Score:8.1

    Affected Products

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

    Exploits

    No exploit reference

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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252
    http://www.securityfocus.com/bid/102516
    https://access.redhat.com/errata/RHSA-2018:0676
    https://access.redhat.com/errata/RHSA-2018:1062
    https://access.redhat.com/security/cve/CVE-2017-15126
    https://bugzilla.redhat.com/show_bug.cgi?id=1523481
    https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252
    https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=384632e67e0829deb8015ee6ad916b180049d252
    http://www.securityfocus.com/bid/102516
    https://access.redhat.com/errata/RHSA-2018:0676
    https://access.redhat.com/errata/RHSA-2018:1062
    https://access.redhat.com/security/cve/CVE-2017-15126
    https://bugzilla.redhat.com/show_bug.cgi?id=1523481
    https://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252
    https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6

    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