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Vulnerability DatabaseCVE-2025-50422
CVE-2025-50422:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2025-50422 affects freedesktop poppler version 25.04.0. The vulnerability involves heap memory containing PDF stream objects not being cleared upon program exit, which was discovered and disclosed on August 4, 2025 (NVD).
Technical details
The vulnerability is classified as a heap memory disclosure issue (CWE-244: Improper Clearing of Heap Memory Before Release). When pdftocairo renders a PDF and calls cairodebugresetstaticdata() on exit, heap memory containing PDF object streams is not properly cleared. The vulnerability has received a CVSS v3.1 base score of 6.5 (Medium) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L (NVD).
Impact
The vulnerability allows attackers to obtain sensitive PDF content via a memory dump. Specifically, attackers with local access can recover clear-text PDF content, including /stream and /endstream blocks, from process memory (Github POC).
Mitigation and workarounds
The vulnerability has been fixed by the vendor (freedesktop) in their official repository. Users should upgrade to versions after 25.04.0 which include the security patch (Github POC).
Additional resources
Source: This report was generated using AI
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