CVE-2026-12892
Gstreamer1-plugins-bad: gstreamer1-plugins-bad: 1-byte heap out-of-bounds read in h.264 nal extension slice parser
Description
A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.
INFO
Published Date :
June 23, 2026, 7:53 p.m.
Last Modified :
June 23, 2026, 7:53 p.m.
Remotely Exploit :
No
Source :
redhat
Affected Products
The following products are affected by CVE-2026-12892
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 |
Solution
- Update the gst-plugins-bad package.
- Ensure NAL unit data is validated.
- Verify slice boundary checks are safe.
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The following list is the news that have been mention
CVE-2026-12892 vulnerability anywhere in the article.