Gst-plugins-good: gst-plugins-good: unbounded memory growth in rtph264depay and rtph265depay rtp depayloaders
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.5epss 0.8%
from disclosure to weapon0 days
Published on NVDAug 6
1st PoCAug 6
exploitation probability
0.8%top 48% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9public PoCs found — 1
githubgithub.com/0xSemizzz/CVE-2026-18649★ 4⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://0xsemizzz.vercel.app/blog/cve-2026-18649-gstreamer-rtp-dos/https://access.redhat.com/errata/RHSA-2026:53451https://access.redhat.com/errata/RHSA-2026:53452https://access.redhat.com/errata/RHSA-2026:56966https://access.redhat.com/security/cve/CVE-2026-18649https://bugzilla.redhat.com/show_bug.cgi?id=2510614https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113