CVE-2018-20511 Information disclosure in n/a

What is CVE-2018-20511?

CVE-2018-20511 is a medium-severity vulnerability in Debian Debian Linux, published on 27 Dec 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 4.18.11. The ipddp_ioctl function in drivers/net/appletalk/ipddp.c allows local users to obtain sensitive kernel address information by leveraging CAP_NET_ADMIN to read the ipddp_route dev and next fields via an SIOCFINDIPDDPRT ioctl call.

Weakness: CWE-200

Which versions are affected by CVE-2018-20511?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2018-20511?

Apply the vendor's patch.

Is CVE-2018-20511 being exploited?

There is no known exploitation of CVE-2018-20511 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2018-20511, GHSA-fv37-hx2f-95x8, UBUNTU-CVE-2018-20511.