CVE-2025-43718

A stack overflow flaw has been discovered in Poppler. This stack overflow which leads to a SIGSEGV crash occurs via deeply nested structures within the metadata of a PDF document. This occurs in Dict::lookup, Catalog::getMetadata, and associated functions in PDFDoc, with deep recursion in the regex executor (std::__detail::_Executor).

On Red Hat systems a process which issues a SIGSEGV signal is terminated. The only risk to Red Hat users is that the process using poppler may halt.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.