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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

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

发现 gst-plugins-base 中存在一个安全漏洞。当处理其附加的 GstVideoMeta 元数据声明的平面步长（plane strides）和偏移量（offsets）超出实际后备内存分配的缓冲区的视频缓冲区时，可能触发堆缓冲区溢出。在反序列化过程中未对元数据进行范围检查，且视频帧映射代码在允许消费者读取或写入视频数据之前，未验证声明的平面几何信息是否完全包含在缓冲区范围内。控制 GStreamer 进程间 IPC 管道发送端点的本地攻击者可以投递一个伪造步长的精心构造缓冲区，导致接收进程越界读写堆内存。

CVSS 8.4 · High EPSS 0.21% · P10

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-86476

Vulnerability Information
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Vulnerability Title
Gstreamer1-plugins-base: gst-plugins-base: heap buffer overflow via unvalidated gstvideometa plane extents in gst_video_frame_map_id and video_meta_deserialize
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-86476

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III. Intelligence Information for CVE-2026-86476

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Vendor Advisories for CVE-2026-86476 (2)

Other References for CVE-2026-86476 (1)

Same Patch Batch · Red Hat · 2026-10-14 · 25 CVEs total

CVE-2026-104795 8.8 HIGH Insights-runtime-extractor: insights-runtime-extractor: container escape via privileged bi
CVE-2026-86848 8.8 HIGH Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds
CVE-2026-86567 8.8 HIGH Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, le
CVE-2026-100236 8.6 HIGH Dpdk: dpdk: heap out-of-bounds read/write in gso header copy
CVE-2026-86565 8.2 HIGH Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, ca
CVE-2026-90954 7.8 HIGH Busybox: busybox: dpkg-deb extraction-root escape via per-ar-member deferred symlink flush
CVE-2026-86563 7.8 HIGH Dpdk: dpdk: double offset bug in vhost log mapping calculation
CVE-2026-86562 7.8 HIGH Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse
CVE-2026-88829 7.2 HIGH Busybox: busybox: http request smuggling via pipelined requests in httpd reverse proxy
CVE-2026-86561 6.5 MEDIUM Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup
CVE-2026-100229 6.5 MEDIUM Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds write in gst_h266_
CVE-2026-86849 6.5 MEDIUM Dpdk: dpdk: integer overflow combined with missing validation leads to host buffer overflo
CVE-2026-86566 6.5 MEDIUM Dpdk: dpdk: guest with runt rx descriptors underflows copy length in vhost enqueue (split
CVE-2026-86845 6.5 MEDIUM Dpdk: dpdk: guest-triggered use-after-free and type confusion in vhost-crypto session clea
CVE-2026-86846 6.5 MEDIUM Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost
CVE-2026-86847 6.5 MEDIUM Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
CVE-2026-86856 6.5 MEDIUM Dpdk: dpdk: stack and heap buffer overflow in nfp vdpa driver
CVE-2026-93683 6.4 MEDIUM Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou
CVE-2026-100231 6.1 MEDIUM Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: heap out-of-bounds write in asfm
CVE-2026-109968 5.5 MEDIUM Clevis: clevis: pkcs#11 luks passphrase logged in plaintext to world-readable file

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-787

V. Comments for CVE-2026-86476

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