| Name | CVE-2026-18649 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gst-plugins-good1.0 (PTS) | bullseye | 1.18.4-2+deb11u2 | vulnerable |
| bullseye (security) | 1.18.4-2+deb11u4 | vulnerable | |
| bookworm | 1.22.0-5+deb12u3 | vulnerable | |
| bookworm (security) | 1.22.0-5+deb12u2 | vulnerable | |
| trixie (security), trixie | 1.26.2-1+deb13u2 | vulnerable | |
| forky, sid | 1.28.6-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gst-plugins-good1.0 | source | (unstable) | 1.28.6-1 |
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12234
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12244
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/5cd490c125e04676659593b0f5b19130fc2face7 (1.28.6)
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/820bd15585b13af8be9b0131699655194ae68a5b (1.28.6)
https://gstreamer.freedesktop.org/security/sa-2026-0076.html