CVE-2026-125704

high

Description

A use-after-free flaw was found in GStreamer core buffer value deserialization. When serialized buffer text contains an invalid character, an error path frees a mapped buffer before unmapping it. Applications that parse untrusted caps or structure data can reach a freed-buffer read and may crash. A network-facing GStreamer Data Protocol receiver can process such caps data without user interaction; further impact has not been established.

References

https://gstreamer.freedesktop.org/security/sa-2026-0028.html

https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11583.patch

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120866

https://bugzilla.redhat.com/show_bug.cgi?id=2569128

https://access.redhat.com/security/cve/CVE-2026-125704

Details

Source: Mitre, NVD

Published: 2026-11-10

Updated: 2026-11-10

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High