CVE-2017-15126

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    CVE-2017-15126

    Published: 14 Jan 2018Last Modified: 15 Mar 2026

    Summary:

    Details: 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().

    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://github.com/torvalds/linux/commit/384632e67e0829deb8015ee6ad916b180049d252, https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6, https://bugzilla.redhat.com/show_bug.cgi?id=1523481

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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