CVE-2026-18649
Publication date 6 August 2026
Last updated 17 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| gst-plugins-good1.0 | 26.04 LTS resolute |
Fixed 1.28.2-2ubuntu0.2
|
| 24.04 LTS noble |
Fixed 1.24.2-1ubuntu1.6
|
|
| 22.04 LTS jammy |
Fixed 1.20.3-0ubuntu1.8
|
|
| 20.04 LTS focal |
Fixed 1.16.3-0ubuntu1.3+esm2
|
|
| 18.04 LTS bionic |
Fixed 1.14.5-0ubuntu1~18.04.3+esm2
|
|
| 16.04 LTS xenial |
Fixed 1.8.3-1ubuntu0.5+esm2
|
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CVSS version: CVSS v3.0
Base score
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Related Ubuntu Security Notices (USN)
- USN-8778-1
- GStreamer Good Plugins vulnerability
- 17 September 2026