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    CVE-2018-20169

    An issue was discovered in the Linux kernel before 4.19.9. The USB subsystem mishandles size checks during the reading of an extra descriptor, related to __usb_get_extra_descriptor in drivers/usb/core/usb.c.

    Published:Dec 5, 2018
    Last Modified:Nov 21, 2024
    EPS:Dec 17, 2018
    EPSS Score:0.00128
    CVSS Score:6.8

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Mrg
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    No exploit reference

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    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
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    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…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=704620afc70cf47abb9d6a1a57f3825d2bca49cf
    https://access.redhat.com/errata/RHSA-2019:3309
    https://access.redhat.com/errata/RHSA-2019:3517
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.9
    https://github.com/torvalds/linux/commit/704620afc70cf47abb9d6a1a57f3825d2bca49cf
    https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
    https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
    https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
    https://usn.ubuntu.com/3879-1/
    https://usn.ubuntu.com/3879-2/
    https://usn.ubuntu.com/4094-1/
    https://usn.ubuntu.com/4118-1/
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=704620afc70cf47abb9d6a1a57f3825d2bca49cf
    https://access.redhat.com/errata/RHSA-2019:3309
    https://access.redhat.com/errata/RHSA-2019:3517
    https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.9
    https://github.com/torvalds/linux/commit/704620afc70cf47abb9d6a1a57f3825d2bca49cf
    https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
    https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
    https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
    https://usn.ubuntu.com/3879-1/
    https://usn.ubuntu.com/3879-2/
    https://usn.ubuntu.com/4094-1/
    https://usn.ubuntu.com/4118-1/

    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