CVE-2018-11356 Null dereference in n/a

What is CVE-2018-11356?

CVE-2018-11356 is a high-severity vulnerability in Debian Debian Linux, published on 22 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Wireshark 2.6.0, 2.4.0 to 2.4.6, and 2.2.0 to 2.2.14, the DNS dissector could crash. This was addressed in epan/dissectors/packet-dns.c by avoiding a NULL pointer dereference for an empty name in an SRV record.

Weakness: CWE-476

Which versions are affected by CVE-2018-11356?

It affects 2 products.

Products include Debian Debian Linux, Wireshark Wireshark.

How do I fix CVE-2018-11356?

Apply the vendor's patch.

Is CVE-2018-11356 being exploited?

There is no known exploitation of CVE-2018-11356 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 ALPINE-CVE-2018-11356, DEBIAN-CVE-2018-11356, GHSA-cj9g-wwhq-mmwp, UBUNTU-CVE-2018-11356.