CVE-2019-3846 Memory corruption in kernel

What is CVE-2019-3846?

CVE-2019-3846 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 3 Jun 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2019-3846?

It affects 12 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Linux kernel, Netapp A700s Firmware, Netapp Active Iq Unified Manager for Vmware Vsphere and 6 more.

How do I fix CVE-2019-3846?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-3846 being exploited?

There is no known exploitation of CVE-2019-3846 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-3846, GHSA-3fcq-fcfj-jgfq, UBUNTU-CVE-2019-3846.