CVE-2026-18839

Name of the Vulnerable Software and Affected Versions popt (affected versions not specified)

Description An integer underflow occurs in the popt library when formatting help text for option tables that exceed the terminal width. A local user can trigger this by causing an application to print help under these specific conditions, which may lead to the application crashing or failing to display the help text, resulting in a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.