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CVE-2026-86476

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

8.4 HighPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.19%Unchanged since Oct 14, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.4

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

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.

Record
CVE-2026-86476
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2026-100950 8.4

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.

Record
EUVD-2026-100950
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-8f88-phh5-g894 8.4

A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing...

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.

Record
GHSA-8f88-phh5-g894
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 8.4

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.

Record
CVE-2026-86476
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-787
Updated
2026-11-05
OSVBELL-CVE-2026-86476 8.4
Record
BELL-CVE-2026-86476
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2026-86476 8.4

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.

Record
DEBIAN-CVE-2026-86476
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-05
OSVUBUNTU-CVE-2026-86476 8.4

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.

Record
UBUNTU-CVE-2026-86476
CVSS 3.1
8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVAZL-108306 No score

CVE-2026-86476 affecting package gstreamer1-plugins-base 1.20.0-3

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.

Record
AZL-108306
Updated
2026-11-05

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gstreamer1-plugins-base
Azure Linux:3
through 1.20.0-3 None known
gst-plugins-base
Alpaquita:23
1.20.4-r0 and later None known
gst-plugins-base
Alpaquita:25
1.26.1-r0 and later None known
gst-plugins-base
Alpaquita:stream
1.22.1-r0 and later None known
gst-plugins-base1.0
Debian:12
All versions, plus listed versions
1.22.0-31.22.0-3+deb12u11.22.0-3+deb12u21.22.0-3+deb12u31.22.0-3+deb12u4
Show 45 moreShow less
1.22.0-3+deb12u51.22.0-3+deb12u61.22.0-3+deb12u71.22.1-11.22.10-11.22.2-11.22.3-11.22.3-21.22.4-11.22.5-11.22.6-11.22.7-11.22.8-11.22.9-11.23.1-11.23.1-21.23.2-11.23.2-21.23.90-11.24.0-11.24.0-21.24.1-11.24.10-11.24.11-11.24.11-21.24.11-31.24.12-11.24.2-11.24.3-11.24.4-11.24.4-1+hurd.11.24.5-11.24.6-11.24.7-11.24.7-21.24.7-31.24.7-41.24.8-11.24.9-11.25.1-11.25.1-21.25.1-31.25.1-41.25.1-51.25.50-1
None known
gst-plugins-base1.0
Debian:13
All versions, plus listed versions
1.26.10-11.26.2-11.26.2-1+deb13u11.26.2-1+deb13u21.26.3-1
Show 31 moreShow less
1.26.4-11.26.5-11.26.5-21.26.6-11.26.6-21.26.6-31.26.7-11.26.8-11.26.9-11.27.1-11.27.2-11.27.2-21.27.2-31.27.50-11.27.50-21.27.90-11.28.0-11.28.1-11.28.2-11.28.2-21.28.3-11.28.4-11.28.5-11.28.6-11.28.6-21.28.7-11.28.8-11.29.1-11.29.1-21.29.1-31.29.2-1
None known
gst-plugins-base1.0
Debian:14
All versions, plus listed versions
1.26.10-11.26.2-11.26.3-11.26.4-11.26.5-1
Show 29 moreShow less
1.26.5-21.26.6-11.26.6-21.26.6-31.26.7-11.26.8-11.26.9-11.27.1-11.27.2-11.27.2-21.27.2-31.27.50-11.27.50-21.27.90-11.28.0-11.28.1-11.28.2-11.28.2-21.28.3-11.28.4-11.28.5-11.28.6-11.28.6-21.28.7-11.28.8-11.29.1-11.29.1-21.29.1-31.29.2-1
None known
gst-plugins-base1.0
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
1.6.0-1ubuntu11.6.1-1ubuntu11.6.2-1ubuntu11.7.1-1ubuntu11.7.2-1ubuntu1
Show 14 moreShow less
1.7.90-1ubuntu11.7.91-1ubuntu11.8.0-1ubuntu11.8.1-1ubuntu0.11.8.2-1ubuntu0.11.8.2-1ubuntu0.21.8.3-1ubuntu0.11.8.3-1ubuntu0.21.8.3-1ubuntu0.31.8.3-1ubuntu0.3+esm11.8.3-1ubuntu0.3+esm21.8.3-1ubuntu0.3+esm31.8.3-1ubuntu0.3+esm41.8.3-1ubuntu0.3+esm5
None known
gst-plugins-base1.0
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
1.12.3-11.12.4-11.13.1-1ubuntu11.13.91-1ubuntu11.14.0-1ubuntu1
Show 11 moreShow less
1.14.0-2ubuntu11.14.1-1ubuntu1~ubuntu18.04.11.14.1-1ubuntu1~ubuntu18.04.21.14.4-1ubuntu1.1~ubuntu18.04.11.14.5-0ubuntu1~18.04.11.14.5-0ubuntu1~18.04.21.14.5-0ubuntu1~18.04.31.14.5-0ubuntu1~18.04.3+esm11.14.5-0ubuntu1~18.04.3+esm21.14.5-0ubuntu1~18.04.3+esm31.14.5-0ubuntu1~18.04.3+esm4
None known
gst-plugins-base1.0
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
1.16.1-11.16.2-11.16.2-21.16.2-2ubuntu31.16.2-2ubuntu4
Show 10 moreShow less
1.16.2-41.16.2-4ubuntu0.11.16.3-0ubuntu11.16.3-0ubuntu1.11.16.3-0ubuntu1.21.16.3-0ubuntu1.31.16.3-0ubuntu1.41.16.3-0ubuntu1.4+esm11.16.3-0ubuntu1.4+esm21.16.3-0ubuntu1.4+esm3
None known
Show 4 moreShow less
Affected packages
PackageAffectedFixed
gst-plugins-base1.0
Ubuntu:22.04:LTS
All versions, plus listed versions
1.18.5-11.19.90-11.20.0-11.20.0-21.20.1-1
Show 6 moreShow less
1.20.1-1ubuntu0.11.20.1-1ubuntu0.21.20.1-1ubuntu0.41.20.1-1ubuntu0.51.20.1-1ubuntu0.61.20.1-1ubuntu0.7
None known
gst-plugins-base1.0
Ubuntu:24.04:LTS
All versions, plus listed versions
1.22.6-11.22.7-11.22.8-11.22.10-11.24.1-1
Show 7 moreShow less
1.24.1-1build11.24.2-11.24.2-1ubuntu0.11.24.2-1ubuntu0.21.24.2-1ubuntu0.31.24.2-1ubuntu0.41.24.2-1ubuntu0.5
None known
gst-plugins-base1.0
Ubuntu:26.10
All versions, plus listed versions
1.28.2-11.28.3-11.28.4-11.28.6-11.28.6-21.28.7-1
None known
gst-plugins-base1.0
Ubuntu:26.04:LTS
All versions, plus listed versions
1.26.6-11.27.2-31.27.2-3build11.27.90-11.28.0-11.28.1-11.28.2-11.28.2-1ubuntu0.1
None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHub0xSemizzz/CVE-2026-864762026-10-23

History

History
RecordedChangedSources
factsNVD
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-86476 is a high vulnerability (CVSS 8.4) in Red Hat Enterprise Linux 10, published October 14, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 9th percentile. No source names a fixed version.

References

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Left out here: 38 versions. The JSON record has them.

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