GStreamer Core Buffer Use-After-Free in Deserialization
CVE-2026-125704 Published on November 10, 2026
Gstreamer: gstreamer: use-after-free in gstreamer core buffer value deserialization
A use-after-free flaw was found in GStreamer core buffer value deserialization. When crafted serialized buffer data contains an invalid character, an error path frees a mapped buffer before unmapping it. An application that parses untrusted caps or structure data could crash; a network-facing GStreamer Data Protocol receiver can process such data without user interaction. Further impact has not been established.
Vulnerability Analysis
CVE-2026-125704 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-125704 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-125704
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