| Name | CVE-2026-88914 |
| Description | 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| gst-plugins-good1.0 (PTS) | bookworm | 1.22.0-5+deb12u3 | vulnerable |
| bookworm (security) | 1.22.0-5+deb12u2 | vulnerable | |
| trixie (security), trixie | 1.26.2-1+deb13u2 | vulnerable | |
| forky | 1.28.6-1 | vulnerable | |
| sid | 1.28.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| gst-plugins-good1.0 | source | (unstable) | 1.28.7-1 |
https://gstreamer.freedesktop.org/security/sa-2026-0079.html
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5235
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12433
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12437
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/a2a14d1b23d4a74d388f43745f000ea4999bf1d3 (1.28.7)
Fixed by: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/c297f67b20d6284e58ebb2bcd61a1a3ffa0eedab (1.28.7)