CVE-2026-86476

NameCVE-2026-86476
DescriptionA flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before allowing consumers to read or write video data. A local attacker who controls the sending side of a GStreamer inter-process IPC pipeline can deliver a crafted buffer carrying fabricated strides, causing the receiving process to read or write beyond heap boundaries. Successful exploitation can cause a denial of service or potentially allow code execution within the affected process.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
gst-plugins-base1.0 (PTS)bookworm1.22.0-3+deb12u6vulnerable
bookworm (security)1.22.0-3+deb12u7vulnerable
trixie1.26.2-1+deb13u1vulnerable
trixie (security)1.26.2-1+deb13u2vulnerable
forky, sid1.28.8-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gst-plugins-base1.0source(unstable)(unfixed)

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2529510
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5257 (not yet public)
check details when upstream issue public?

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