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CVE-2018-8781

HIGH
7.8
CVSS Score
Published: April 23, 2018 at 07:00 PM UTC
Updated: June 17, 2026 at 02:05 AM UTC
6 products affected across 4 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
12.0414.0416.0417.10
Debian Linux· Debiandrupal
95%
7.08.09.0
Linux Kernel· Linux
95%
v ≤ 4.153.17 ≤ v < 3.18.1033.19 ≤ v < 4.1.523.4 ≤ v < 3.16.574.10 ≤ v < 4.14.314.15 ≤ v < 4.15.144.2 ≤ v < 4.4.1254.5 ≤ v < 4.9.91
Affected range stops below 3.16.57, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.18.103, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.52, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.14.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.15.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.125, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.91, so it looks safe — our inference, not a vendor statement
Enterprise Linux Desktop· Red Hatrubygems
95%
7.0
Enterprise Linux Server· Red Hatrubygems
95%
7.0
Enterprise Linux Workstation· Red Hatrubygems
95%
7.0

References (15)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:2948
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3083
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3096
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://patchwork.freedesktop.org/patch/211845/
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://research.checkpoint.com/mmap-vulnerabilities-linux-kernel/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3654-1/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3654-2/

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

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