Bug 2331749 (CVE-2024-47834)

Summary: CVE-2024-47834 gstreamer1-plugins-good: Use-After-Free read in Matroska CodecPrivate
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the GStreamer library. A use-after-free in the Matroska demuxer can cause crashes for certain input files, potentially allowing a malicious actor to trigger an application crash.
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Bug Depends On: 2332119, 2332120    
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Description OSIDB Bzimport 2024-12-11 20:02:05 UTC 
GStreamer is a library for constructing graphs of media-handling components. An Use-After-Free read vulnerability has been discovered affecting the processing of CodecPrivate elements in Matroska streams. In the GST_MATROSKA_ID_CODECPRIVATE case within the gst_matroska_demux_parse_stream function, a data chunk is allocated using gst_ebml_read_binary. Later, the allocated memory is freed in the gst_matroska_track_free function, by the call to g_free (track->codec_priv). Finally, the freed memory is accessed in the caps_serialize function through gst_value_serialize_buffer. The freed memory will be accessed in the gst_value_serialize_buffer function. This results in a UAF read vulnerability, as the function tries to process memory that has already been freed. This vulnerability is fixed in 1.24.10.
Comment 3 errata-xmlrpc 2025-05-13 10:25:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:7242 https://access.redhat.com/errata/RHSA-2025:7242