Integer overflow in Check Point Software Technologies Ltd. Linux Kernel
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Check Point Software Technologies Ltd. Linux Kernel — versions kernel version 3.4 and up to and including 4.15
- Linux Kernel
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0, 9.0
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- R0B1NL1N/linux-kernel-exploitation
- kdn111/linux-kernel-exploitation
- khanhdn111/linux-kernel-exploitation
- khanhdz-06/linux-kernel-exploitation
- khanhdz191/linux-kernel-exploitation
- khanhhdz/linux-kernel-exploitation
- khanhhdz06/linux-kernel-exploitation
- khanhnd123/linux-kernel-exploitation
- khnhdz/linux-kernel-exploitation
References
- access.redhat.com/errata/RHSA-2018:3083 (vendor-advisory, Third Party Advisory)
- research.checkpoint.com/mmap-vulnerabilities-linux-kernel/ (Third Party Advisory)
- www.debian.org/security/2018/dsa-4187 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3654-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3674-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3677-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2018/dsa-4188 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3674-2/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2948 (vendor-advisory, Third Party Advisory)
- patchwork.freedesktop.org/patch/211845/ (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2018-8781?
- CVE-2018-8781 is a high-severity vulnerability in Check Point Software Technologies Ltd. Linux Kernel, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2018-04-23.
- How severe is CVE-2018-8781?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-8781 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.