CVE-2018-11496 Use after free in n/a

What is CVE-2018-11496?

CVE-2018-11496 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 26 May 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In Long Range Zip (aka lrzip) 0.631, there is a use-after-free in read_stream in stream.c, because decompress_file in lrzip.c lacks certain size validation.

Weakness: CWE-416

Which versions are affected by CVE-2018-11496?

It affects 2 products.

Products include Debian Debian Linux, Long Range Zip Project Long Range Zip.

How do I fix CVE-2018-11496?

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-2018-11496 being exploited?

There is no known exploitation of CVE-2018-11496 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-2018-11496, GHSA-j3rv-w4w8-qcv2, UBUNTU-CVE-2018-11496.