OOB-write vulnerability in GST_SSA_PARSE's gst_ssa_parse_remove_override_codes function

CVE-2024-47541

What is CVE-2024-47541?

An out-of-bounds write vulnerability has been identified within the GStreamer media handling library, specifically in the function that manages parsing and removing SubStation Alpha (SSA) style override codes. The vulnerability occurs when an incorrectly ordered input string contains a closing curly bracket before an opening one. This scenario causes the memmove() function to erroneously copy a substring, resulting in an increasingly oversized size parameter, which leads to memory being written beyond its allocated boundaries. This flaw poses significant risks, including potential memory corruption. The issue has been resolved in GStreamer version 1.24.10.

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