What’s Vulnerable › Vulnerabilities

CVE-2019-16746

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 12.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-24 · updated 2026-06-17
• Weakness: CWE-120

Description

An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 19.04, 19.10
• Debian Linux: 8.0
• Fedoraproject Fedora: 30
• Linux kernel: from 2.6.25 before 3.16.79; from 3.17 before 4.4.197; from 4.5 before 4.9.197; from 4.10 before 4.14.149; from 4.15 before 4.19.79; from 4.20 before 5.3.6 — fixed in 3.16.79, 4.14.149, 4.19.79, 4.4.197, 4.9.197, 5.3.6
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: Linux kernel 3.16.79, 4.14.149, 4.19.79, 4.4.197. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
• http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
• https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TASE2ESEZAER6DTZH3DJ4K2JNO46TVL7/
• https://marc.info/?l=linux-wireless&m=156901391225058&w=2
• https://seclists.org/bugtraq/2019/Nov/11
• https://security.netapp.com/advisory/ntap-20191031-0005/
• https://usn.ubuntu.com/4183-1/
• https://usn.ubuntu.com/4186-1/
• https://usn.ubuntu.com/4209-1/

Get alerted when CVE-2019-16746 or the next vulnerability affects your stack