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    CVE-2018-18386

    drivers/tty/n_tty.c in the Linux kernel before 4.14.11 allows local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ.

    Published:Dec 20, 2017
    Last Modified:Nov 21, 2024
    EPS:Oct 17, 2018
    EPSS Score:0.00049
    CVSS Score:3.3

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348
    https://access.redhat.com/errata/RHSA-2019:0831
    https://bugzilla.suse.com/show_bug.cgi?id=1094825
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
    https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348
    https://usn.ubuntu.com/3849-1/
    https://usn.ubuntu.com/3849-2/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=966031f340185eddd05affcf72b740549f056348
    https://access.redhat.com/errata/RHSA-2019:0831
    https://bugzilla.suse.com/show_bug.cgi?id=1094825
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11
    https://github.com/torvalds/linux/commit/966031f340185eddd05affcf72b740549f056348
    https://usn.ubuntu.com/3849-1/
    https://usn.ubuntu.com/3849-2/

    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