mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attack…

published 2021-01-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23736

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.3%; EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits: 0; none known

mwifiex_cmd_802_11_ad_hoc_start in drivers/net/wireless/marvell/mwifiex/join.c in the Linux kernel through 5.10.4 might allow remote attackers to execute arbitrary code via a long SSID value, aka CID-5c455c5ab332.

Patch / fix

fixed in 1 distros 6 links 2

linux linux_kernel 4.4.250, 4.9.250, 4.14.214, 4.19.166, 5.4.88, 5.10.6

debian ubuntu red hat suse opensuse arch linux

linux Debian 14, Debian 13, Debian 12 5.10.5-1

debian advisories DEBIAN-CVE-2020-36158

linux Ubuntu 16.04 LTS 4.4.0-204.236
linux Ubuntu 18.04 LTS 4.15.0-137.141
linux Ubuntu 20.04 LTS 5.4.0-67.75
linux-aws Ubuntu 16.04 LTS 4.4.0-1123.137
linux-aws Ubuntu 18.04 LTS 4.15.0-1095.102
linux-aws Ubuntu 20.04 LTS 5.4.0-1039.41
linux-gcp Ubuntu 16.04 LTS 4.15.0-1094.107~16.04.1
linux-gcp Ubuntu 20.04 LTS 5.4.0-1038.41

ubuntu advisories UBUNTU-CVE-2020-36158

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 RHEL 8 4.18.0-348.el8
perf RHEL 8 4.18.0-348.el8
bpftool RHEL 8 4.18.0-348.el8
kernel-core RHEL 8 4.18.0-348.el8
kernel-tools RHEL 8 4.18.0-348.el8
python3-perf RHEL 8 4.18.0-348.el8
kernel-modules RHEL 8 4.18.0-348.el8
kernel-zfcpdump RHEL 8 4.18.0-348.el8

red hat advisories RHSA-2021:4356 RHSA-2021:4140

kernel-syms SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.138.1
kernel-source SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +4 more 4.4.180-94.138.1
kernel-default SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +5 more 4.4.180-94.138.1
kgraft-patch-SLE12-SP3_Update_37 SLES for SAP 12 SP3, SLES 12 SP3-LTSS, OpenStack Cloud Crowbar 8 +3 more 1-4.3.1
kernel-syms SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.66.1
kernel-source SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.66.1
kernel-default SLES for SAP 15, SLES 15-LTSS, SLE Live Patching 15 +3 more 4.12.14-150.66.1
kernel-vanilla SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 4.12.14-150.66.1

suse advisories SUSE-SU-2021:14630-1 SUSE-SU-2021:0452-1 SUSE-SU-2021:0438-1 SUSE-SU-2021:0437-1 SUSE-SU-2021:0434-1 SUSE-SU-2021:0433-1

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-lp151.28.91.1
kernel-obs-qa openSUSE Leap 15.1 4.12.14-lp151.28.91.1
kernel-source openSUSE Leap 15.1 4.12.14-lp151.28.91.1
kernel-default openSUSE Leap 15.1 4.12.14-lp151.28.91.1

opensuse advisories openSUSE-SU-2021:0242-1 openSUSE-SU-2021:0075-1 openSUSE-SU-2021:0060-1

linux Arch Linux 5.10.6.arch1-1
linux-zen Arch Linux 5.10.6.zen1-1
linux-hardened Arch Linux 5.10.6.a-1
linux-lts Arch Linux 5.4.88-1

arch linux advisories AVG-1408 AVG-1409 AVG-1410 AVG-1411

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-2020-36158 updated 2026-11-02 cvss 6.7

kernel: buffer overflow in mwifiex_cmd_802_11_ad_hoc_start function in drivers/net/wireless/marvell/mwifiex/join.c via a long SSID value

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
affected: workaround, no fix planned “Out of support scope”
Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-348.el8, kernel-debuginfo-common-aarch64 4.18.0-348.el8, kernel-debuginfo-common-ppc64le 4.18.0-348.el8 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-348.el8, kernel 4.18.0-348.el8, bpftool 4.18.0-348.el8, kernel-core 4.18.0-348.el8, kernel-tools 4.18.0-348.el8, python3-perf 4.18.0-348.el8, +15 more
fixed: vendor fix RHSA-2021:4356
Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-348.rt7.130.el8, kernel-rt-core 4.18.0-348.rt7.130.el8, kernel-rt-modules 4.18.0-348.rt7.130.el8, kernel-rt-debug-core 4.18.0-348.rt7.130.el8, kernel-rt-debug-modules 4.18.0-348.rt7.130.el8, kernel-rt-modules-extra 4.18.0-348.rt7.130.el8, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-348.rt7.130.el8, kernel-rt-kvm 4.18.0-348.rt7.130.el8, kernel-rt-core 4.18.0-348.rt7.130.el8, kernel-rt-modules 4.18.0-348.rt7.130.el8, kernel-rt-debug-kvm 4.18.0-348.rt7.130.el8, kernel-rt-debug-core 4.18.0-348.rt7.130.el8, +4 more
fixed: vendor fix RHSA-2021:4140
Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +82 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

Exploit prediction

2.31% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
CNA	3.1	8.8	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/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-120 Buffer Copy without Checking Size of Input

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/5c455c5ab332773464d02ba17015acdca198f03d
patch, third-party-advisory
git.kernel.org /cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c455c5ab332773464d02ba17015acdca198f03d
patch, vendor-advisory
lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/HCHBIRS27VMOGMBHPWP2R7SZRFXT6O6U/
vendor-advisory
debian.org /security/2021/dsa-4843
vendor-advisory, third-party-advisory
patchwork.kernel.org /project/linux-wireless/patch/20201206084801.26479-1-ruc_zhangxiaohui%40163.com/
lore.kernel.org /r/20201206084801.26479-1-ruc_zhangxiaohui%40163.com
security.netapp.com /advisory/ntap-20210212-0002/
third-party-advisory
lists.debian.org /debian-lts-announce/2021/02/msg00018.html
mailing-list, third-party-advisory
lists.debian.org /debian-lts-announce/2021/03/msg00010.html
mailing-list, third-party-advisory

Sources

CVE List CVE-2020-36158
NVD CVE-2020-36158

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.

Summary