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Fencer Vulns
high 7.8

CVE-2020-0432 json

In skb_to_mamac of networking.c, there is a possible out of bounds write due to an integer overflow.

published 2020-09-17 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-1934

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

In skb_to_mamac of networking.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-143560807

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 5.4.19-1

debian advisories DEBIAN-CVE-2020-0432

  • linux Ubuntu 16.04 LTS 4.4.0-177.207
  • linux Ubuntu 18.04 LTS 4.15.0-96.97
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1105.116
  • linux-aws Ubuntu 18.04 LTS 4.15.0-1065.69
  • linux-gcp Ubuntu 16.04 LTS 4.15.0-1060.64
  • linux-hwe Ubuntu 16.04 LTS 4.15.0-96.97~16.04.1
  • linux-hwe Ubuntu 18.04 LTS 5.3.0-46.38~18.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1069.76

ubuntu advisories UBUNTU-CVE-2020-0432

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 for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.65.1
  • kernel-source SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.65.1
  • kernel-default SLES for SAP 12 SP4, SLES 12 SP4-LTSS, SLE Live Patching 12 SP4 +3 more 4.12.14-95.65.1
  • kernel-syms SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.63.1
  • kernel-source SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.63.1
  • kernel-default SLES for SAP 15, SLES 15-LTSS, SLE Live Patching 15 +3 more 4.12.14-150.63.1
  • kernel-vanilla SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.63.1
  • kernel-obs-build SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.63.1

suse advisories SUSE-SU-2020:3544-1SUSE-SU-2020:3532-1SUSE-SU-2020:3503-1SUSE-SU-2020:3501-1SUSE-SU-2020:3014-1SUSE-SU-2020:2999-1

  • kernel-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-syms-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-rt_debug openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-source-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-syms openSUSE Leap 15.1 4.12.14-lp151.28.71.1
  • kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.71.2
  • kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.71.1
  • kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.71.2

opensuse advisories openSUSE-SU-2021:0242-1openSUSE-SU-2020:1655-1openSUSE-SU-2020:1586-1

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-2020-0432 updated cvss 7.8

kernel: possible out of bounds write in skb_to_mamac of networking.c

  • 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-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise MRG 2 kernel
    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

0.22% chance of exploitation in the next 30 days, higher than 13% 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 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a Android

Classification

Weakness

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.