CVE-2026-53704
Publication date 15 June 2026
Last updated 26 June 2026
Ubuntu priority
Description
A flaw was found in GStreamer's RealMedia demuxer in the gst-plugins-ugly package. When processing a RealMedia file containing a specially crafted FILEINFO metadata section, the demuxer parses variable-name and variable-value pairs using re_skip_pascal_string() without validating that offsets remain within the mapped buffer. Additionally, the element count controlling the parsing loop is read from attacker-controlled data without validation, which can cause an infinite loop. A crafted RealMedia file can cause the application to crash, hang, or potentially read limited adjacent memory contents.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| gst-plugins-ugly1.0 | 26.04 LTS resolute |
Needs evaluation
|
| 25.10 questing |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
7.1 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-53704
- https://gstreamer.freedesktop.org/security/sa-2026-0042.html
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11825
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11826 (1.28.4)
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11831 (1.26 branch)
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11832 (1.24 branch)