CVE-2019-14901: A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiF

Q: How do I fix CVE-2019-14901?

linux kernel: upgrade to 3.16.83, 4.4.217, 4.9.217, 4.14.164, 4.19.95, 5.4.11; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2019-14901 being exploited?

CVE-2019-14901 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-14901 affect?

CVE-2019-14901 affects linux kernel, fedora, debian linux. Severity is critical (CVSS 9.8). A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The vulnerability allows a remote attacker to cause a system crash, resulting in a denial of service, or execute ar

Q: How urgent is CVE-2019-14901?

Priority 69/100. Critical severity; EPSS top 3%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

This week

CRITICAL 9.8REMOTEWATCHLISTUPGRADEMITIGATEMITIGATE

CVE-2019-14901 is a critical-severity flaw (CVSS 9.8) affecting linux kernel, fedora, debian linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The vulnerability allows a remote attacker to cause a system crash, resulting in a denial of service, or execute arbitrary code. The highest threat with this vulnerability is with the availability of the system. If code execution occurs, the code will run with the permissions of root. This will affect both confidentiality a

Why this priority

Critical severity
EPSS top 3%: very likely to be exploited
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	16.5% (top 3%)
CISA exploited list	No
Weakness	CWE-122, CWE-400, CWE-787
Published	2019-11-29
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: canonical · debian · fedoraproject · linux

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-11-29 15:15 UTCPublished CVE record published
2026-06-17 02:19 UTCUpdated Record last modified

linux linux kernel UPGRADE

Affected: >= 3.15 and < 3.16.83 · >= 3.17 and < 4.4.217 · >= 4.5 and < 4.9.217 · >= 4.10 and < 4.14.164 · >= 4.15 and < 4.19.95 · >= 4.20 and < 5.4.11

Fixed in: 3.16.83, 4.4.217, 4.9.217, 4.14.164, 4.19.95, 5.4.11

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

fedoraproject fedora MITIGATE

Affected: 30 · 31

Fixed in: no fixed release known

Safe to downgrade to: a release before 30

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

debian debian linux MITIGATE

Affected: 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

canonical ubuntu linux MITIGATE

Affected: 14.04 · 16.04 · 18.04 · 19.10

Fixed in: no fixed release known

Safe to downgrade to: a release before 14.04

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · libopenmpt · FIXED · 0.8.10-2.fc46 · FEDORA-2026-a9998621be · source

sudo dnf upgrade --advisory=FEDORA-2026-a9998621be

Debian 12 · linux · FIXED · 5.4.13-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.4.13-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 5.4.13-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.4.13-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 7 · kernel-rt · FIXED · kernel-rt-3.10.0-1062.12.1.rt56.1042.el7

sudo dnf upgrade --advisory=RHSA-2020:0375 rpm -q kernel-rt

RHEL 7 · kernel · FIXED · kernel-3.10.0-1062.12.1.el7

sudo dnf upgrade --advisory=RHSA-2020:0374 rpm -q kernel

RHEL 7 · kernel-alt · FIXED · kernel-alt-4.14.0-115.19.1.el7a

sudo dnf upgrade --advisory=RHSA-2020:1493 rpm -q kernel-alt

RHEL 8 · kernel-rt · FIXED · kernel-rt-4.18.0-147.5.1.rt24.98.el8_1

sudo dnf upgrade --advisory=RHSA-2020:0328 rpm -q kernel-rt

RHEL 8 · kernel · FIXED · kernel-4.18.0-147.5.1.el8_1

sudo dnf upgrade --advisory=RHSA-2020:0339 rpm -q kernel

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: usn.ubuntu.com/4225-2/
Write-up: usn.ubuntu.com/4227-1/
Write-up: usn.ubuntu.com/4228-1/

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-14901?

linux kernel: upgrade to 3.16.83, 4.4.217, 4.9.217, 4.14.164, 4.19.95, 5.4.11; fedora: mitigate or apply the listed mitigation; debian linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-14901 being exploited?

CVE-2019-14901 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-14901 affect?

CVE-2019-14901 affects linux kernel, fedora, debian linux. Severity is critical (CVSS 9.8). A heap overflow flaw was found in the Linux kernel, all versions 3.x.x and 4.x.x before 4.18.0, in Marvell WiFi chip driver. The vulnerability allows a remote attacker to cause a system crash, resulting in a denial of service, or execute ar

How urgent is CVE-2019-14901?

Priority 69/100. Critical severity; EPSS top 3%: very likely to be exploited; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Linux kernel vulnerabilities · Ubuntu vulnerabilities · Debian vulnerabilities · Wi-Fi vulnerabilities

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References

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