Log in Start free

Vulnerability · Published Oct 14, 2026 · Assigned by redhat

CVE-2026-86476Gstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideometa plane extents in gst_video_frame_map_id and video_meta_deserialize

High 8.4

In plain English

A high-severity out-of-bounds write in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)8.4High
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC

Official description

A 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12gst-plugins-base1.0no fix listedDEBIAN-CVE-2026-86476
Debian:13gst-plugins-base1.0no fix listedDEBIAN-CVE-2026-86476
Debian:14gst-plugins-base1.0no fix listedDEBIAN-CVE-2026-86476
Ubuntu:22.04:LTSgst-plugins-base1.0no fix listedUBUNTU-CVE-2026-86476
Ubuntu:24.04:LTSgst-plugins-base1.0no fix listedUBUNTU-CVE-2026-86476
Ubuntu:26.04:LTSgst-plugins-base1.0no fix listedUBUNTU-CVE-2026-86476
Ubuntu:26.10gst-plugins-base1.0no fix listedUBUNTU-CVE-2026-86476

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References