CVE-2026-53704 Details
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.
A vulnerability exists in the GStreamer RealMedia demuxer within the gst-plugins-ugly package, specifically in the handling of the FILEINFO metadata section. The demuxer improperly parses variable-name and variable-value pairs by using a function that skips Pascal strings without ensuring that the offsets remain within the bounds of the allocated buffer. This flaw allows for reading data beyond the intended limits, potentially leading to crashes or hangs, especially if the manipulated data creates an infinite loop. Furthermore, this out-of-bounds read could disclose limited adjacent memory contents. This issue affects GStreamer 1.0 through 1.22.9 on Red Hat Enterprise Linux 7, 8, 9, and 10.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 16, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 8, 2026 | CVE Modified | [email protected] |
| Aug 5, 2026 | CVE Modified | [email protected] |
| Jul 23, 2026 | CVE Modified | [email protected] |
| Jul 22, 2026 | CVE Modified | [email protected] |
| Jul 8, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 15, 2026 | New CVE Received | [email protected] |