What’s Vulnerable › Vulnerabilities

CVE-2024-47603: GHSL-2024-251: GStreamer NULL-pointer dereference in Matroska/WebM demuxer

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-12 · updated 2026-06-17
• Weakness: CWE-476

Description

GStreamer is a library for constructing graphs of media-handling components. A null pointer dereference vulnerability has been discovered in the gst_matroska_demux_update_tracks function within matroska-demux.c. The vulnerability occurs when the gst_caps_is_equal function is called with invalid caps values. If this happen, then in the function gst_buffer_get_size the call to GST_BUFFER_MEM_PTR can return a null pointer. Attempting to dereference the size field of this null pointer results in a null pointer dereference. This vulnerability is fixed in 1.24.10.

Affected products

• GStreamer: before 1.24.10 — fixed in 1.24.10

How to fix

Upgrade to a fixed version: GStreamer 1.24.10. Check the vendor advisory for mitigations.

References

• https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8057.patch
• https://gstreamer.freedesktop.org/security/sa-2024-0021.html
• https://securitylab.github.com/advisories/GHSL-2024-251_Gstreamer/
• https://lists.debian.org/debian-lts-announce/2025/02/msg00035.html

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