CVE-2018-8781

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.

References

https://patchwork.freedesktop.org/patch/211845/

https://www.debian.org/security/2018/dsa-4188

https://www.debian.org/security/2018/dsa-4187

https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html

https://usn.ubuntu.com/3654-2/

https://usn.ubuntu.com/3654-1/

https://usn.ubuntu.com/3656-1/

https://usn.ubuntu.com/3677-2/

https://usn.ubuntu.com/3677-1/

https://usn.ubuntu.com/3674-2/

https://usn.ubuntu.com/3674-1/

https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/

https://access.redhat.com/errata/RHSA-2018:3096

https://access.redhat.com/errata/RHSA-2018:3083

https://access.redhat.com/errata/RHSA-2018:2948

Details

Risk Information

CVSS v2

CVSS v3