CVE-2019-3459 Information disclosure in Linux

What is CVE-2019-3459?

CVE-2019-3459 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 11 Apr 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A heap address information leak while using L2CAP_GET_CONF_OPT was discovered in the Linux kernel before 5.1-rc1.

Weakness: CWE-125

Which versions are affected by CVE-2019-3459?

It affects 16 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Redhat Codeready Linux Builder, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop and 10 more.

How do I fix CVE-2019-3459?

Upgrade to a fixed version.

Is CVE-2019-3459 being exploited?

There is no known exploitation of CVE-2019-3459 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-2019-3459, GHSA-mxj7-853v-cxhh, UBUNTU-CVE-2019-3459.