CVE-2024-47540: Gstreamer

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

GStreamer is a library for constructing graphs of media-handling components. An uninitialized stack variable vulnerability has been identified in the gst_matroska_demux_add_wvpk_header function within matroska-demux.c. When size < 4, the program calls gst_buffer_unmap with an uninitialized map variable. Then, in the gst_memory_unmap function, the program will attempt to unmap the buffer using the uninitialized map variable, causing a function pointer hijack, as it will jump to mem->allocator->mem_unmap_full or mem->allocator->mem_unmap. This vulnerability could allow an attacker to hijack the execution flow, potentially leading to code execution. This vulnerability is fixed in 1.24.10.

Affected products

• Gstreamer Gstreamer: before 1.24.10 (fixed in 1.24.10)

Published 2024-12-12. Last modified 2026-06-17.