Skip to content
Fencer Vulns
high 7.8

CVE-2018-13406 json

An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c in the Linux kernel before 4.17.4 could result in loca…

published 2018-07-06 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-5349

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

An integer overflow in the uvesafb_setcmap function in drivers/video/fbdev/uvesafb.c in the Linux kernel before 4.17.4 could result in local attackers being able to crash the kernel or potentially elevate privileges because kmalloc_array is not used.

Patch / fix

  • linux linux_kernel 3.16.58, 3.18.114, 4.4.139, 4.9.111, 4.14.53, 4.17.4
  • linux Debian 14, Debian 13, Debian 12 4.17.6-1

debian advisories DEBIAN-CVE-2018-13406

  • linux Ubuntu 14.04 LTS 3.13.0-157.207
  • linux Ubuntu 16.04 LTS 4.4.0-134.160
  • linux Ubuntu 18.04 LTS 4.15.0-33.36
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1028.31
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1066.76
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1020.20
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1018.19~16.04.2
  • linux-gcp Ubuntu 18.04 LTS 4.15.0-1018.19

ubuntu advisories UBUNTU-CVE-2018-13406

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-syms SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • kernel-source SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 4.4.121-92.92.1
  • lttng-modules SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 2.7.1-9.4.1
  • kernel-default SLES 12 SP2-BCL, SLE High Availability Extension 12 SP2, OpenStack Cloud 7 +3 more 4.4.121-92.92.1
  • kgraft-patch-SLE12-SP2_Update_24 SLES 12 SP2-BCL, OpenStack Cloud 7, Enterprise Storage 4 +2 more 1-3.7.1
  • kernel-rt SLE Real Time 11 SP4 3.0.101.rt130-69.33.1
  • kernel-syms-rt SLE Real Time 11 SP4 3.0.101.rt130-69.33.1
  • kernel-rt_trace SLE Real Time 11 SP4 3.0.101.rt130-69.33.1

suse advisories SUSE-SU-2018:2344-2SUSE-SU-2018:2637-1SUSE-SU-2018:2384-1SUSE-SU-2018:2362-1SUSE-SU-2018:2366-1SUSE-SU-2018:2344-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-13406 updated cvss 4.4

kernel: Integer overflow in drivers/video/fbdev/uvesafb.c:uvesafb_setcmap() allows for potential denial of service

  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-core, kernel-tools, python3-perf, +17 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.