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    CVE-2018-8781

    The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.

    Published:Mar 21, 2018
    Last Modified:Nov 21, 2024
    EPS:Apr 23, 2018
    EPSS Score:0.00101
    CVSS Score:7.8

    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 Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Extras Rt

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    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…
    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…
    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…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    https://access.redhat.com/errata/RHSA-2018:2948
    https://access.redhat.com/errata/RHSA-2018:3083
    https://access.redhat.com/errata/RHSA-2018:3096
    https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
    https://patchwork.freedesktop.org/patch/211845/
    https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/
    https://usn.ubuntu.com/3654-1/
    https://usn.ubuntu.com/3654-2/
    https://usn.ubuntu.com/3656-1/
    https://usn.ubuntu.com/3674-1/
    https://usn.ubuntu.com/3674-2/
    https://usn.ubuntu.com/3677-1/
    https://usn.ubuntu.com/3677-2/
    https://www.debian.org/security/2018/dsa-4187
    https://www.debian.org/security/2018/dsa-4188
    https://access.redhat.com/errata/RHSA-2018:2948
    https://access.redhat.com/errata/RHSA-2018:3083
    https://access.redhat.com/errata/RHSA-2018:3096
    https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
    https://patchwork.freedesktop.org/patch/211845/
    https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/
    https://usn.ubuntu.com/3654-1/
    https://usn.ubuntu.com/3654-2/
    https://usn.ubuntu.com/3656-1/
    https://usn.ubuntu.com/3674-1/
    https://usn.ubuntu.com/3674-2/
    https://usn.ubuntu.com/3677-1/
    https://usn.ubuntu.com/3677-2/
    https://www.debian.org/security/2018/dsa-4187
    https://www.debian.org/security/2018/dsa-4188

    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