CVE-2018-11358 Use after free in n/a

What is CVE-2018-11358?

CVE-2018-11358 is a high-severity use after free 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 Q.931 dissector could crash. This was addressed in epan/dissectors/packet-q931.c by avoiding a use-after-free after a malformed packet prevented certain cleanup.

Weakness: CWE-416

Which versions are affected by CVE-2018-11358?

It affects 2 products.

Products include Debian Debian Linux, Wireshark Wireshark.

How do I fix CVE-2018-11358?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-11358 being exploited?

There is no known exploitation of CVE-2018-11358 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-2018-11358, CLEANSTART-2024-PI41576, DEBIAN-CVE-2018-11358, GHSA-6f7c-929m-9rmc, UBUNTU-CVE-2018-11358.