CVE-2018-8781

Advisory lineage Upstream: 0 Downstream: 67
Modified
Published: 23 Apr 2018, 19:00
Last modified:16 Sept 2024, 23:56

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.1% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Apr 2018, 19:00
Published
Vulnerability first disclosed
16 Sept 2024, 23:56
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.10%• Percentile: 27%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 17.10

  • check point software technologies ltd.•linux kernel

    kernel version 3.4 and up to and including 4.15

  • debian•debian_linux

    7.0 | 8.0 | 9.0

  • linux•linux_kernel

    ≥ 3.4, < 3.16.57 | ≥ 3.17, < 3.18.103 | ≥ 3.19, < 4.1.52 | ≥ 4.2, < 4.4.125 | ≥ 4.5, < 4.9.91 | ≥ 4.10, < 4.14.31 | ≥ 4.15, < 4.15.14

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_workstation

    7.0

References (15)