Bug 2558394 (CVE-2026-111183)

Summary: CVE-2026-111183 gstreamer: GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in GStreamer. A remote attacker can achieve arbitrary code execution by sending specially crafted Real-time Transport Protocol (RTP) stream packets to applications using the rtpL16depay plugin. This issue occurs due to a lack of proper validation on the length of incoming payload data before copying it to a memory buffer, resulting in a heap-based buffer overflow. Successful exploitation allows unauthorized code execution in the context of the running application.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-21 17:24:17 UTC
GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143.