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Fencer Vulns
medium 4.6

CVE-2016-3136 json

The mct_u232_msr_to_state function in drivers/usb/serial/mct_u232.c in the Linux kernel before 4.5.1 allows physically proximate attackers…

published 2016-05-02 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-4188

cvss
4.6
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
1
Exploit-DB

Summary

The mct_u232_msr_to_state function in drivers/usb/serial/mct_u232.c in the Linux kernel before 4.5.1 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted USB device without two interrupt-in endpoint descriptors.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.5.1-1

debian advisories DEBIAN-CVE-2016-3136

  • linux Ubuntu 14.04 LTS 3.13.0-86.130
  • linux Ubuntu 16.04 LTS 4.4.0-22.39
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1010.12
  • linux-lts-wily Ubuntu 14.04 LTS 4.2.0-36.41~14.04.1
  • linux-lts-vivid Ubuntu 14.04 LTS 3.19.0-59.65~14.04.1
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-73.95~14.04.1
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-22.39~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1013.14

ubuntu advisories UBUNTU-CVE-2016-3136

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-rt SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-compute SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-syms-rt SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-rt_debug SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-source-rt SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-compute_debug SLE Real Time 12 SP1 3.12.58-14.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.59-60.41.2
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 3.12.59-60.41.2

suse advisories SUSE-SU-2016:1764-1SUSE-SU-2016:1696-1SUSE-SU-2016:1690-1

  • kernel-source openSUSE Tumbleweed 4.8.13-1.1

opensuse advisories openSUSE-SU-2024:10128-1

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-2016-3136 updated cvss 4.9

kernel: Crash on invalid USB device descriptors (mct_u232 driver)

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    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

Timeline

  1. First public exploit (EDB-39541)
  2. Published

Exploit prediction

1.80% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-39541 Linux Kernel 3.10.0 (CentOS / RHEL 7.1) - 'mct_u232' Nullpointer Dereference dos, 2016-03-09

CVSS scores

assigned by version score vector
NVD 3.0 4.6 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

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.