CVE-2018-8781
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedApr 23, 2018
First seenApr 23, 2018
How to fix
Update
- linux linux_kernel3.16.57, 3.18.103, 4.1.52, 4.4.125, 4.9.91, 4.14.31, 4.15.14 or later
Vendor advisories
- access.redhat.com/errata/RHSA-2018:3083
- debian.org/security/2018/dsa-4187
- usn.ubuntu.com/3654-1/
- usn.ubuntu.com/3674-1/
- usn.ubuntu.com/3677-1/
- debian.org/security/2018/dsa-4188
- usn.ubuntu.com/3674-2/
- access.redhat.com/errata/RHSA-2018:2948
- usn.ubuntu.com/3677-2/
- usn.ubuntu.com/3654-2/
- usn.ubuntu.com/3656-1/
- access.redhat.com/errata/RHSA-2018:3096
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.4 ≤ v < 3.16.57, 3.17 ≤ v < 3.18.103, 3.19 ≤ v < 4.1.52, 4.2 ≤ v < 4.4.125, 4.5 ≤ v < 4.9.91, 4.10 ≤ v < 4.14.31, 4.15 ≤ v < 4.15.14 | 3.16.57, 3.18.103, 4.1.52, 4.4.125, 4.9.91, 4.14.31, 4.15.14 |
| canonical ubuntu_linux | 12.04, 14.04, 16.04, 17.10 | — |
| debian debian_linux | 7.0, 8.0, 9.0 | — |
| redhat enterprise_linux_desktop | 7.0 | — |
| redhat enterprise_linux_server | 7.0 | — |
| redhat enterprise_linux_workstation | 7.0 | — |
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