CVE-2026-88914
mediumA flaw was found in GStreamer's gst-plugins-good isomp4 plugin.
A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV file containing CEA-608 closed-caption data, an integer overflow in 32-bit unsigned arithmetic can bypass a bounds check in the caption parser. This leads to an out-of-bounds heap read of up to 244 bytes, which is then included in the downstream caption output. An attacker could exploit this by tricking a user into opening a malicious media file, potentially resulting in disclosure of adjacent heap memory or application crash.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/security/cve/CVE-2026-88914 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2531416 secalert@redhat.com
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12433 secalert@redhat.com
- https://gstreamer.freedesktop.org/security/sa-2026-0079.html secalert@redhat.com